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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
61baf725 | 3 | Copyright (C) 1986-2017 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
a6d9a66e | 21 | #include "arch-utils.h" |
c906108c | 22 | #include <ctype.h> |
776592bf | 23 | #include "hashtab.h" |
c906108c SS |
24 | #include "symtab.h" |
25 | #include "frame.h" | |
26 | #include "breakpoint.h" | |
1042e4c0 | 27 | #include "tracepoint.h" |
c906108c SS |
28 | #include "gdbtypes.h" |
29 | #include "expression.h" | |
30 | #include "gdbcore.h" | |
31 | #include "gdbcmd.h" | |
32 | #include "value.h" | |
33 | #include "command.h" | |
34 | #include "inferior.h" | |
45741a9c | 35 | #include "infrun.h" |
c906108c SS |
36 | #include "gdbthread.h" |
37 | #include "target.h" | |
38 | #include "language.h" | |
50f182aa | 39 | #include "gdb-demangle.h" |
0ba1096a | 40 | #include "filenames.h" |
c906108c SS |
41 | #include "annotate.h" |
42 | #include "symfile.h" | |
43 | #include "objfiles.h" | |
0378c332 | 44 | #include "source.h" |
c5f0f3d0 | 45 | #include "linespec.h" |
c94fdfd0 | 46 | #include "completer.h" |
5b7f31a4 | 47 | #include "gdb.h" |
8b93c638 | 48 | #include "ui-out.h" |
e1507482 | 49 | #include "cli/cli-script.h" |
fe898f56 | 50 | #include "block.h" |
a77053c2 | 51 | #include "solib.h" |
84acb35a JJ |
52 | #include "solist.h" |
53 | #include "observer.h" | |
765dc015 | 54 | #include "memattr.h" |
f7f9143b | 55 | #include "ada-lang.h" |
d1aa2f50 | 56 | #include "top.h" |
79a45b7d | 57 | #include "valprint.h" |
4efc6507 | 58 | #include "jit.h" |
65d79d4b | 59 | #include "parser-defs.h" |
55aa24fb SDJ |
60 | #include "gdb_regex.h" |
61 | #include "probe.h" | |
e9cafbcc | 62 | #include "cli/cli-utils.h" |
be34f849 | 63 | #include "continuations.h" |
1bfeeb0f JL |
64 | #include "stack.h" |
65 | #include "skip.h" | |
b775012e | 66 | #include "ax-gdb.h" |
e2e4d78b | 67 | #include "dummy-frame.h" |
5589af0e | 68 | #include "interps.h" |
d3ce09f5 | 69 | #include "format.h" |
cfc31633 | 70 | #include "thread-fsm.h" |
5d5658a1 | 71 | #include "tid-parse.h" |
d3ce09f5 | 72 | |
1042e4c0 SS |
73 | /* readline include files */ |
74 | #include "readline/readline.h" | |
75 | #include "readline/history.h" | |
76 | ||
77 | /* readline defines this. */ | |
78 | #undef savestring | |
79 | ||
034dad6f | 80 | #include "mi/mi-common.h" |
6dddc817 | 81 | #include "extension.h" |
325fac50 | 82 | #include <algorithm> |
5ed8105e | 83 | #include "progspace-and-thread.h" |
6c5b2ebe | 84 | #include "common/array-view.h" |
76f9c9cf | 85 | #include "common/gdb_optional.h" |
104c1213 | 86 | |
e7e8980f YQ |
87 | /* Enums for exception-handling support. */ |
88 | enum exception_event_kind | |
89 | { | |
90 | EX_EVENT_THROW, | |
591f19e8 | 91 | EX_EVENT_RETHROW, |
e7e8980f YQ |
92 | EX_EVENT_CATCH |
93 | }; | |
94 | ||
4a64f543 | 95 | /* Prototypes for local functions. */ |
c906108c | 96 | |
a14ed312 | 97 | static void disable_command (char *, int); |
c906108c | 98 | |
a14ed312 | 99 | static void enable_command (char *, int); |
c906108c | 100 | |
896b6bda | 101 | static void map_breakpoint_numbers (const char *, |
48649e1b | 102 | gdb::function_view<void (breakpoint *)>); |
c906108c | 103 | |
a14ed312 | 104 | static void ignore_command (char *, int); |
c906108c | 105 | |
4efb68b1 | 106 | static int breakpoint_re_set_one (void *); |
c906108c | 107 | |
348d480f PA |
108 | static void breakpoint_re_set_default (struct breakpoint *); |
109 | ||
f00aae0f KS |
110 | static void |
111 | create_sals_from_location_default (const struct event_location *location, | |
112 | struct linespec_result *canonical, | |
113 | enum bptype type_wanted); | |
983af33b SDJ |
114 | |
115 | static void create_breakpoints_sal_default (struct gdbarch *, | |
116 | struct linespec_result *, | |
e1e01040 PA |
117 | gdb::unique_xmalloc_ptr<char>, |
118 | gdb::unique_xmalloc_ptr<char>, | |
119 | enum bptype, | |
983af33b SDJ |
120 | enum bpdisp, int, int, |
121 | int, | |
122 | const struct breakpoint_ops *, | |
44f238bb | 123 | int, int, int, unsigned); |
983af33b | 124 | |
6c5b2ebe PA |
125 | static std::vector<symtab_and_line> decode_location_default |
126 | (struct breakpoint *b, const struct event_location *location, | |
127 | struct program_space *search_pspace); | |
983af33b | 128 | |
a14ed312 | 129 | static void clear_command (char *, int); |
c906108c | 130 | |
a14ed312 | 131 | static void catch_command (char *, int); |
c906108c | 132 | |
a9634178 | 133 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 134 | |
a14ed312 | 135 | static void mention (struct breakpoint *); |
c906108c | 136 | |
348d480f PA |
137 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
138 | enum bptype, | |
c0a91b2b | 139 | const struct breakpoint_ops *); |
3742cc8b YQ |
140 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
141 | const struct symtab_and_line *); | |
142 | ||
4a64f543 MS |
143 | /* This function is used in gdbtk sources and thus can not be made |
144 | static. */ | |
63c252f8 | 145 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 146 | struct symtab_and_line, |
c0a91b2b TT |
147 | enum bptype, |
148 | const struct breakpoint_ops *); | |
c906108c | 149 | |
06edf0c0 PA |
150 | static struct breakpoint * |
151 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
152 | enum bptype type, | |
a1aa2221 LM |
153 | const struct breakpoint_ops *ops, |
154 | int loc_enabled); | |
06edf0c0 | 155 | |
76897487 KB |
156 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
157 | ||
a6d9a66e UW |
158 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
159 | CORE_ADDR bpaddr, | |
88f7da05 | 160 | enum bptype bptype); |
76897487 | 161 | |
6c95b8df PA |
162 | static void describe_other_breakpoints (struct gdbarch *, |
163 | struct program_space *, CORE_ADDR, | |
5af949e3 | 164 | struct obj_section *, int); |
c906108c | 165 | |
85d721b8 PA |
166 | static int watchpoint_locations_match (struct bp_location *loc1, |
167 | struct bp_location *loc2); | |
168 | ||
f1310107 TJB |
169 | static int breakpoint_location_address_match (struct bp_location *bl, |
170 | struct address_space *aspace, | |
171 | CORE_ADDR addr); | |
172 | ||
d35ae833 PA |
173 | static int breakpoint_location_address_range_overlap (struct bp_location *, |
174 | struct address_space *, | |
175 | CORE_ADDR, int); | |
176 | ||
11db9430 | 177 | static void info_breakpoints_command (char *, int); |
c906108c | 178 | |
11db9430 | 179 | static void info_watchpoints_command (char *, int); |
d77f58be | 180 | |
4efb68b1 | 181 | static int breakpoint_cond_eval (void *); |
c906108c | 182 | |
4efb68b1 | 183 | static void cleanup_executing_breakpoints (void *); |
c906108c | 184 | |
a14ed312 | 185 | static void commands_command (char *, int); |
c906108c | 186 | |
a14ed312 | 187 | static void condition_command (char *, int); |
c906108c | 188 | |
834c0d03 | 189 | static int remove_breakpoint (struct bp_location *); |
b2b6a7da | 190 | static int remove_breakpoint_1 (struct bp_location *, enum remove_bp_reason); |
c906108c | 191 | |
e514a9d6 | 192 | static enum print_stop_action print_bp_stop_message (bpstat bs); |
c906108c | 193 | |
4efb68b1 | 194 | static int watchpoint_check (void *); |
c906108c | 195 | |
a14ed312 | 196 | static int hw_breakpoint_used_count (void); |
c906108c | 197 | |
a1398e0c PA |
198 | static int hw_watchpoint_use_count (struct breakpoint *); |
199 | ||
200 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
201 | enum bptype type, | |
202 | int *other_type_used); | |
c906108c | 203 | |
a14ed312 | 204 | static void hbreak_command (char *, int); |
c906108c | 205 | |
a14ed312 | 206 | static void thbreak_command (char *, int); |
c906108c | 207 | |
816338b5 SS |
208 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
209 | int count); | |
c906108c | 210 | |
a14ed312 | 211 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 212 | |
a14ed312 | 213 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 214 | |
fe3f5fa8 | 215 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
216 | static void incref_bp_location (struct bp_location *loc); |
217 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 218 | |
39d61571 | 219 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 220 | |
44702360 PA |
221 | /* update_global_location_list's modes of operation wrt to whether to |
222 | insert locations now. */ | |
223 | enum ugll_insert_mode | |
224 | { | |
225 | /* Don't insert any breakpoint locations into the inferior, only | |
226 | remove already-inserted locations that no longer should be | |
227 | inserted. Functions that delete a breakpoint or breakpoints | |
228 | should specify this mode, so that deleting a breakpoint doesn't | |
229 | have the side effect of inserting the locations of other | |
230 | breakpoints that are marked not-inserted, but should_be_inserted | |
231 | returns true on them. | |
232 | ||
233 | This behavior is useful is situations close to tear-down -- e.g., | |
234 | after an exec, while the target still has execution, but | |
235 | breakpoint shadows of the previous executable image should *NOT* | |
236 | be restored to the new image; or before detaching, where the | |
237 | target still has execution and wants to delete breakpoints from | |
238 | GDB's lists, and all breakpoints had already been removed from | |
239 | the inferior. */ | |
240 | UGLL_DONT_INSERT, | |
241 | ||
a25a5a45 PA |
242 | /* May insert breakpoints iff breakpoints_should_be_inserted_now |
243 | claims breakpoints should be inserted now. */ | |
04086b45 PA |
244 | UGLL_MAY_INSERT, |
245 | ||
a25a5a45 PA |
246 | /* Insert locations now, irrespective of |
247 | breakpoints_should_be_inserted_now. E.g., say all threads are | |
248 | stopped right now, and the user did "continue". We need to | |
249 | insert breakpoints _before_ resuming the target, but | |
250 | UGLL_MAY_INSERT wouldn't insert them, because | |
251 | breakpoints_should_be_inserted_now returns false at that point, | |
252 | as no thread is running yet. */ | |
04086b45 | 253 | UGLL_INSERT |
44702360 PA |
254 | }; |
255 | ||
256 | static void update_global_location_list (enum ugll_insert_mode); | |
a5606eee | 257 | |
44702360 | 258 | static void update_global_location_list_nothrow (enum ugll_insert_mode); |
74960c60 | 259 | |
d77f58be | 260 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 VP |
261 | |
262 | static void insert_breakpoint_locations (void); | |
a5606eee | 263 | |
11db9430 | 264 | static void info_tracepoints_command (char *, int); |
1042e4c0 | 265 | |
1042e4c0 SS |
266 | static void enable_trace_command (char *, int); |
267 | ||
268 | static void disable_trace_command (char *, int); | |
269 | ||
270 | static void trace_pass_command (char *, int); | |
271 | ||
558a9d82 YQ |
272 | static void set_tracepoint_count (int num); |
273 | ||
9c06b0b4 TJB |
274 | static int is_masked_watchpoint (const struct breakpoint *b); |
275 | ||
b775012e LM |
276 | static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address); |
277 | ||
983af33b SDJ |
278 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
279 | otherwise. */ | |
280 | ||
281 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 282 | |
2060206e PA |
283 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops |
284 | that are implemented on top of software or hardware breakpoints | |
285 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
286 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
287 | ||
288 | /* Internal breakpoints class type. */ | |
06edf0c0 | 289 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
290 | |
291 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
292 | static struct breakpoint_ops momentary_breakpoint_ops; |
293 | ||
2060206e PA |
294 | /* The breakpoint_ops structure to be used in regular user created |
295 | breakpoints. */ | |
296 | struct breakpoint_ops bkpt_breakpoint_ops; | |
297 | ||
55aa24fb SDJ |
298 | /* Breakpoints set on probes. */ |
299 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
300 | ||
e7e0cddf | 301 | /* Dynamic printf class type. */ |
c5867ab6 | 302 | struct breakpoint_ops dprintf_breakpoint_ops; |
e7e0cddf | 303 | |
d3ce09f5 SS |
304 | /* The style in which to perform a dynamic printf. This is a user |
305 | option because different output options have different tradeoffs; | |
306 | if GDB does the printing, there is better error handling if there | |
307 | is a problem with any of the arguments, but using an inferior | |
308 | function lets you have special-purpose printers and sending of | |
309 | output to the same place as compiled-in print functions. */ | |
310 | ||
311 | static const char dprintf_style_gdb[] = "gdb"; | |
312 | static const char dprintf_style_call[] = "call"; | |
313 | static const char dprintf_style_agent[] = "agent"; | |
314 | static const char *const dprintf_style_enums[] = { | |
315 | dprintf_style_gdb, | |
316 | dprintf_style_call, | |
317 | dprintf_style_agent, | |
318 | NULL | |
319 | }; | |
320 | static const char *dprintf_style = dprintf_style_gdb; | |
321 | ||
322 | /* The function to use for dynamic printf if the preferred style is to | |
323 | call into the inferior. The value is simply a string that is | |
324 | copied into the command, so it can be anything that GDB can | |
325 | evaluate to a callable address, not necessarily a function name. */ | |
326 | ||
bde6261a | 327 | static char *dprintf_function; |
d3ce09f5 SS |
328 | |
329 | /* The channel to use for dynamic printf if the preferred style is to | |
330 | call into the inferior; if a nonempty string, it will be passed to | |
331 | the call as the first argument, with the format string as the | |
332 | second. As with the dprintf function, this can be anything that | |
333 | GDB knows how to evaluate, so in addition to common choices like | |
334 | "stderr", this could be an app-specific expression like | |
335 | "mystreams[curlogger]". */ | |
336 | ||
bde6261a | 337 | static char *dprintf_channel; |
d3ce09f5 SS |
338 | |
339 | /* True if dprintf commands should continue to operate even if GDB | |
340 | has disconnected. */ | |
341 | static int disconnected_dprintf = 1; | |
342 | ||
5cea2a26 PA |
343 | struct command_line * |
344 | breakpoint_commands (struct breakpoint *b) | |
345 | { | |
d1b0a7bf | 346 | return b->commands ? b->commands.get () : NULL; |
5cea2a26 | 347 | } |
3daf8fe5 | 348 | |
f3b1572e PA |
349 | /* Flag indicating that a command has proceeded the inferior past the |
350 | current breakpoint. */ | |
351 | ||
352 | static int breakpoint_proceeded; | |
353 | ||
956a9fb9 | 354 | const char * |
2cec12e5 AR |
355 | bpdisp_text (enum bpdisp disp) |
356 | { | |
4a64f543 MS |
357 | /* NOTE: the following values are a part of MI protocol and |
358 | represent values of 'disp' field returned when inferior stops at | |
359 | a breakpoint. */ | |
bc043ef3 | 360 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 361 | |
2cec12e5 AR |
362 | return bpdisps[(int) disp]; |
363 | } | |
c906108c | 364 | |
4a64f543 | 365 | /* Prototypes for exported functions. */ |
c906108c | 366 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 367 | if such is available. */ |
c906108c SS |
368 | static int can_use_hw_watchpoints; |
369 | ||
920d2a44 AC |
370 | static void |
371 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
372 | struct cmd_list_element *c, | |
373 | const char *value) | |
374 | { | |
3e43a32a MS |
375 | fprintf_filtered (file, |
376 | _("Debugger's willingness to use " | |
377 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
378 | value); |
379 | } | |
380 | ||
fa8d40ab JJ |
381 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
382 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 383 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
384 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
385 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
386 | static void |
387 | show_pending_break_support (struct ui_file *file, int from_tty, | |
388 | struct cmd_list_element *c, | |
389 | const char *value) | |
390 | { | |
3e43a32a MS |
391 | fprintf_filtered (file, |
392 | _("Debugger's behavior regarding " | |
393 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
394 | value); |
395 | } | |
fa8d40ab | 396 | |
765dc015 | 397 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 398 | set with "break" but falling in read-only memory. |
765dc015 VP |
399 | If 0, gdb will warn about such breakpoints, but won't automatically |
400 | use hardware breakpoints. */ | |
401 | static int automatic_hardware_breakpoints; | |
402 | static void | |
403 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
404 | struct cmd_list_element *c, | |
405 | const char *value) | |
406 | { | |
3e43a32a MS |
407 | fprintf_filtered (file, |
408 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
409 | value); |
410 | } | |
411 | ||
a25a5a45 PA |
412 | /* If on, GDB keeps breakpoints inserted even if the inferior is |
413 | stopped, and immediately inserts any new breakpoints as soon as | |
414 | they're created. If off (default), GDB keeps breakpoints off of | |
415 | the target as long as possible. That is, it delays inserting | |
416 | breakpoints until the next resume, and removes them again when the | |
417 | target fully stops. This is a bit safer in case GDB crashes while | |
418 | processing user input. */ | |
419 | static int always_inserted_mode = 0; | |
72d0e2c5 | 420 | |
33e5cbd6 | 421 | static void |
74960c60 | 422 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 423 | struct cmd_list_element *c, const char *value) |
74960c60 | 424 | { |
a25a5a45 PA |
425 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
426 | value); | |
74960c60 VP |
427 | } |
428 | ||
b57bacec PA |
429 | /* See breakpoint.h. */ |
430 | ||
33e5cbd6 | 431 | int |
a25a5a45 | 432 | breakpoints_should_be_inserted_now (void) |
33e5cbd6 | 433 | { |
a25a5a45 PA |
434 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
435 | { | |
436 | /* If breakpoints are global, they should be inserted even if no | |
437 | thread under gdb's control is running, or even if there are | |
438 | no threads under GDB's control yet. */ | |
439 | return 1; | |
440 | } | |
441 | else if (target_has_execution) | |
442 | { | |
372316f1 PA |
443 | struct thread_info *tp; |
444 | ||
a25a5a45 PA |
445 | if (always_inserted_mode) |
446 | { | |
447 | /* The user wants breakpoints inserted even if all threads | |
448 | are stopped. */ | |
449 | return 1; | |
450 | } | |
451 | ||
b57bacec PA |
452 | if (threads_are_executing ()) |
453 | return 1; | |
372316f1 PA |
454 | |
455 | /* Don't remove breakpoints yet if, even though all threads are | |
456 | stopped, we still have events to process. */ | |
457 | ALL_NON_EXITED_THREADS (tp) | |
458 | if (tp->resumed | |
459 | && tp->suspend.waitstatus_pending_p) | |
460 | return 1; | |
a25a5a45 PA |
461 | } |
462 | return 0; | |
33e5cbd6 | 463 | } |
765dc015 | 464 | |
b775012e LM |
465 | static const char condition_evaluation_both[] = "host or target"; |
466 | ||
467 | /* Modes for breakpoint condition evaluation. */ | |
468 | static const char condition_evaluation_auto[] = "auto"; | |
469 | static const char condition_evaluation_host[] = "host"; | |
470 | static const char condition_evaluation_target[] = "target"; | |
471 | static const char *const condition_evaluation_enums[] = { | |
472 | condition_evaluation_auto, | |
473 | condition_evaluation_host, | |
474 | condition_evaluation_target, | |
475 | NULL | |
476 | }; | |
477 | ||
478 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
479 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
480 | ||
481 | /* Global that we use to display information to the user (gets its value from | |
482 | condition_evaluation_mode_1. */ | |
483 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
484 | ||
485 | /* Translate a condition evaluation mode MODE into either "host" | |
486 | or "target". This is used mostly to translate from "auto" to the | |
487 | real setting that is being used. It returns the translated | |
488 | evaluation mode. */ | |
489 | ||
490 | static const char * | |
491 | translate_condition_evaluation_mode (const char *mode) | |
492 | { | |
493 | if (mode == condition_evaluation_auto) | |
494 | { | |
495 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
496 | return condition_evaluation_target; | |
497 | else | |
498 | return condition_evaluation_host; | |
499 | } | |
500 | else | |
501 | return mode; | |
502 | } | |
503 | ||
504 | /* Discovers what condition_evaluation_auto translates to. */ | |
505 | ||
506 | static const char * | |
507 | breakpoint_condition_evaluation_mode (void) | |
508 | { | |
509 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
510 | } | |
511 | ||
512 | /* Return true if GDB should evaluate breakpoint conditions or false | |
513 | otherwise. */ | |
514 | ||
515 | static int | |
516 | gdb_evaluates_breakpoint_condition_p (void) | |
517 | { | |
518 | const char *mode = breakpoint_condition_evaluation_mode (); | |
519 | ||
520 | return (mode == condition_evaluation_host); | |
521 | } | |
522 | ||
c906108c SS |
523 | /* Are we executing breakpoint commands? */ |
524 | static int executing_breakpoint_commands; | |
525 | ||
c02f5703 MS |
526 | /* Are overlay event breakpoints enabled? */ |
527 | static int overlay_events_enabled; | |
528 | ||
e09342b5 TJB |
529 | /* See description in breakpoint.h. */ |
530 | int target_exact_watchpoints = 0; | |
531 | ||
c906108c | 532 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 533 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 534 | current breakpoint. */ |
c906108c | 535 | |
5c44784c | 536 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 537 | |
5c44784c JM |
538 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
539 | for (B = breakpoint_chain; \ | |
540 | B ? (TMP=B->next, 1): 0; \ | |
541 | B = TMP) | |
c906108c | 542 | |
4a64f543 MS |
543 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
544 | not provided so update_global_location_list must not be called | |
545 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 546 | |
876fa593 | 547 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
f5336ca5 PA |
548 | for (BP_TMP = bp_locations; \ |
549 | BP_TMP < bp_locations + bp_locations_count && (B = *BP_TMP);\ | |
876fa593 | 550 | BP_TMP++) |
7cc221ef | 551 | |
b775012e LM |
552 | /* Iterates through locations with address ADDRESS for the currently selected |
553 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
554 | to where the loop should start from. | |
555 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
556 | appropriate location to start with. */ | |
557 | ||
558 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
559 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
560 | BP_LOCP_TMP = BP_LOCP_START; \ | |
561 | BP_LOCP_START \ | |
f5336ca5 | 562 | && (BP_LOCP_TMP < bp_locations + bp_locations_count \ |
b775012e LM |
563 | && (*BP_LOCP_TMP)->address == ADDRESS); \ |
564 | BP_LOCP_TMP++) | |
565 | ||
1042e4c0 SS |
566 | /* Iterator for tracepoints only. */ |
567 | ||
568 | #define ALL_TRACEPOINTS(B) \ | |
569 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 570 | if (is_tracepoint (B)) |
1042e4c0 | 571 | |
7cc221ef | 572 | /* Chains of all breakpoints defined. */ |
c906108c SS |
573 | |
574 | struct breakpoint *breakpoint_chain; | |
575 | ||
f5336ca5 | 576 | /* Array is sorted by bp_locations_compare - primarily by the ADDRESS. */ |
876fa593 | 577 | |
f5336ca5 | 578 | static struct bp_location **bp_locations; |
876fa593 | 579 | |
f5336ca5 | 580 | /* Number of elements of BP_LOCATIONS. */ |
876fa593 | 581 | |
f5336ca5 | 582 | static unsigned bp_locations_count; |
876fa593 | 583 | |
4a64f543 | 584 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
f5336ca5 | 585 | ADDRESS for the current elements of BP_LOCATIONS which get a valid |
4a64f543 | 586 | result from bp_location_has_shadow. You can use it for roughly |
f5336ca5 | 587 | limiting the subrange of BP_LOCATIONS to scan for shadow bytes for |
4a64f543 | 588 | an address you need to read. */ |
876fa593 | 589 | |
f5336ca5 | 590 | static CORE_ADDR bp_locations_placed_address_before_address_max; |
876fa593 | 591 | |
4a64f543 MS |
592 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
593 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
f5336ca5 PA |
594 | BP_LOCATIONS which get a valid result from bp_location_has_shadow. |
595 | You can use it for roughly limiting the subrange of BP_LOCATIONS to | |
4a64f543 | 596 | scan for shadow bytes for an address you need to read. */ |
876fa593 | 597 | |
f5336ca5 | 598 | static CORE_ADDR bp_locations_shadow_len_after_address_max; |
7cc221ef | 599 | |
4a64f543 | 600 | /* The locations that no longer correspond to any breakpoint, unlinked |
f5336ca5 PA |
601 | from the bp_locations array, but for which a hit may still be |
602 | reported by a target. */ | |
20874c92 VP |
603 | VEC(bp_location_p) *moribund_locations = NULL; |
604 | ||
c906108c SS |
605 | /* Number of last breakpoint made. */ |
606 | ||
95a42b64 TT |
607 | static int breakpoint_count; |
608 | ||
86b17b60 PA |
609 | /* The value of `breakpoint_count' before the last command that |
610 | created breakpoints. If the last (break-like) command created more | |
611 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
612 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
613 | static int prev_breakpoint_count; | |
c906108c | 614 | |
1042e4c0 SS |
615 | /* Number of last tracepoint made. */ |
616 | ||
95a42b64 | 617 | static int tracepoint_count; |
1042e4c0 | 618 | |
6149aea9 PA |
619 | static struct cmd_list_element *breakpoint_set_cmdlist; |
620 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 621 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 622 | |
badd37ce SDJ |
623 | /* See declaration at breakpoint.h. */ |
624 | ||
625 | struct breakpoint * | |
626 | breakpoint_find_if (int (*func) (struct breakpoint *b, void *d), | |
627 | void *user_data) | |
628 | { | |
629 | struct breakpoint *b = NULL; | |
630 | ||
631 | ALL_BREAKPOINTS (b) | |
632 | { | |
633 | if (func (b, user_data) != 0) | |
634 | break; | |
635 | } | |
636 | ||
637 | return b; | |
638 | } | |
639 | ||
468d015d JJ |
640 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
641 | static int | |
642 | breakpoint_enabled (struct breakpoint *b) | |
643 | { | |
0d381245 | 644 | return (b->enable_state == bp_enabled); |
468d015d JJ |
645 | } |
646 | ||
c906108c SS |
647 | /* Set breakpoint count to NUM. */ |
648 | ||
95a42b64 | 649 | static void |
fba45db2 | 650 | set_breakpoint_count (int num) |
c906108c | 651 | { |
86b17b60 | 652 | prev_breakpoint_count = breakpoint_count; |
c906108c | 653 | breakpoint_count = num; |
4fa62494 | 654 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
655 | } |
656 | ||
86b17b60 PA |
657 | /* Used by `start_rbreak_breakpoints' below, to record the current |
658 | breakpoint count before "rbreak" creates any breakpoint. */ | |
659 | static int rbreak_start_breakpoint_count; | |
660 | ||
95a42b64 TT |
661 | /* Called at the start an "rbreak" command to record the first |
662 | breakpoint made. */ | |
86b17b60 | 663 | |
95a42b64 TT |
664 | void |
665 | start_rbreak_breakpoints (void) | |
666 | { | |
86b17b60 | 667 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
668 | } |
669 | ||
670 | /* Called at the end of an "rbreak" command to record the last | |
671 | breakpoint made. */ | |
86b17b60 | 672 | |
95a42b64 TT |
673 | void |
674 | end_rbreak_breakpoints (void) | |
675 | { | |
86b17b60 | 676 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
677 | } |
678 | ||
4a64f543 | 679 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
680 | |
681 | void | |
fba45db2 | 682 | clear_breakpoint_hit_counts (void) |
c906108c SS |
683 | { |
684 | struct breakpoint *b; | |
685 | ||
686 | ALL_BREAKPOINTS (b) | |
687 | b->hit_count = 0; | |
688 | } | |
689 | ||
c906108c | 690 | \f |
48cb2d85 VP |
691 | /* Return the breakpoint with the specified number, or NULL |
692 | if the number does not refer to an existing breakpoint. */ | |
693 | ||
694 | struct breakpoint * | |
695 | get_breakpoint (int num) | |
696 | { | |
697 | struct breakpoint *b; | |
698 | ||
699 | ALL_BREAKPOINTS (b) | |
700 | if (b->number == num) | |
701 | return b; | |
702 | ||
703 | return NULL; | |
704 | } | |
5c44784c | 705 | |
c906108c | 706 | \f |
adc36818 | 707 | |
b775012e LM |
708 | /* Mark locations as "conditions have changed" in case the target supports |
709 | evaluating conditions on its side. */ | |
710 | ||
711 | static void | |
712 | mark_breakpoint_modified (struct breakpoint *b) | |
713 | { | |
714 | struct bp_location *loc; | |
715 | ||
716 | /* This is only meaningful if the target is | |
717 | evaluating conditions and if the user has | |
718 | opted for condition evaluation on the target's | |
719 | side. */ | |
720 | if (gdb_evaluates_breakpoint_condition_p () | |
721 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
722 | return; | |
723 | ||
724 | if (!is_breakpoint (b)) | |
725 | return; | |
726 | ||
727 | for (loc = b->loc; loc; loc = loc->next) | |
728 | loc->condition_changed = condition_modified; | |
729 | } | |
730 | ||
731 | /* Mark location as "conditions have changed" in case the target supports | |
732 | evaluating conditions on its side. */ | |
733 | ||
734 | static void | |
735 | mark_breakpoint_location_modified (struct bp_location *loc) | |
736 | { | |
737 | /* This is only meaningful if the target is | |
738 | evaluating conditions and if the user has | |
739 | opted for condition evaluation on the target's | |
740 | side. */ | |
741 | if (gdb_evaluates_breakpoint_condition_p () | |
742 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
743 | ||
744 | return; | |
745 | ||
746 | if (!is_breakpoint (loc->owner)) | |
747 | return; | |
748 | ||
749 | loc->condition_changed = condition_modified; | |
750 | } | |
751 | ||
752 | /* Sets the condition-evaluation mode using the static global | |
753 | condition_evaluation_mode. */ | |
754 | ||
755 | static void | |
756 | set_condition_evaluation_mode (char *args, int from_tty, | |
757 | struct cmd_list_element *c) | |
758 | { | |
b775012e LM |
759 | const char *old_mode, *new_mode; |
760 | ||
761 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
762 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
763 | { | |
764 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
765 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
766 | "Using host evaluation mode instead.")); | |
767 | return; | |
768 | } | |
769 | ||
770 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
771 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
772 | ||
abf1152a JK |
773 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
774 | settings was "auto". */ | |
775 | condition_evaluation_mode = condition_evaluation_mode_1; | |
776 | ||
b775012e LM |
777 | /* Only update the mode if the user picked a different one. */ |
778 | if (new_mode != old_mode) | |
779 | { | |
780 | struct bp_location *loc, **loc_tmp; | |
781 | /* If the user switched to a different evaluation mode, we | |
782 | need to synch the changes with the target as follows: | |
783 | ||
784 | "host" -> "target": Send all (valid) conditions to the target. | |
785 | "target" -> "host": Remove all the conditions from the target. | |
786 | */ | |
787 | ||
b775012e LM |
788 | if (new_mode == condition_evaluation_target) |
789 | { | |
790 | /* Mark everything modified and synch conditions with the | |
791 | target. */ | |
792 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
793 | mark_breakpoint_location_modified (loc); | |
794 | } | |
795 | else | |
796 | { | |
797 | /* Manually mark non-duplicate locations to synch conditions | |
798 | with the target. We do this to remove all the conditions the | |
799 | target knows about. */ | |
800 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
801 | if (is_breakpoint (loc->owner) && loc->inserted) | |
802 | loc->needs_update = 1; | |
803 | } | |
804 | ||
805 | /* Do the update. */ | |
44702360 | 806 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
807 | } |
808 | ||
809 | return; | |
810 | } | |
811 | ||
812 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
813 | what "auto" is translating to. */ | |
814 | ||
815 | static void | |
816 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
817 | struct cmd_list_element *c, const char *value) | |
818 | { | |
819 | if (condition_evaluation_mode == condition_evaluation_auto) | |
820 | fprintf_filtered (file, | |
821 | _("Breakpoint condition evaluation " | |
822 | "mode is %s (currently %s).\n"), | |
823 | value, | |
824 | breakpoint_condition_evaluation_mode ()); | |
825 | else | |
826 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
827 | value); | |
828 | } | |
829 | ||
830 | /* A comparison function for bp_location AP and BP that is used by | |
831 | bsearch. This comparison function only cares about addresses, unlike | |
f5336ca5 | 832 | the more general bp_locations_compare function. */ |
b775012e LM |
833 | |
834 | static int | |
f5336ca5 | 835 | bp_locations_compare_addrs (const void *ap, const void *bp) |
b775012e | 836 | { |
9a3c8263 SM |
837 | const struct bp_location *a = *(const struct bp_location **) ap; |
838 | const struct bp_location *b = *(const struct bp_location **) bp; | |
b775012e LM |
839 | |
840 | if (a->address == b->address) | |
841 | return 0; | |
842 | else | |
843 | return ((a->address > b->address) - (a->address < b->address)); | |
844 | } | |
845 | ||
846 | /* Helper function to skip all bp_locations with addresses | |
847 | less than ADDRESS. It returns the first bp_location that | |
848 | is greater than or equal to ADDRESS. If none is found, just | |
849 | return NULL. */ | |
850 | ||
851 | static struct bp_location ** | |
852 | get_first_locp_gte_addr (CORE_ADDR address) | |
853 | { | |
854 | struct bp_location dummy_loc; | |
855 | struct bp_location *dummy_locp = &dummy_loc; | |
856 | struct bp_location **locp_found = NULL; | |
857 | ||
858 | /* Initialize the dummy location's address field. */ | |
b775012e LM |
859 | dummy_loc.address = address; |
860 | ||
861 | /* Find a close match to the first location at ADDRESS. */ | |
9a3c8263 | 862 | locp_found = ((struct bp_location **) |
f5336ca5 | 863 | bsearch (&dummy_locp, bp_locations, bp_locations_count, |
9a3c8263 | 864 | sizeof (struct bp_location **), |
f5336ca5 | 865 | bp_locations_compare_addrs)); |
b775012e LM |
866 | |
867 | /* Nothing was found, nothing left to do. */ | |
868 | if (locp_found == NULL) | |
869 | return NULL; | |
870 | ||
871 | /* We may have found a location that is at ADDRESS but is not the first in the | |
872 | location's list. Go backwards (if possible) and locate the first one. */ | |
f5336ca5 | 873 | while ((locp_found - 1) >= bp_locations |
b775012e LM |
874 | && (*(locp_found - 1))->address == address) |
875 | locp_found--; | |
876 | ||
877 | return locp_found; | |
878 | } | |
879 | ||
adc36818 | 880 | void |
7a26bd4d | 881 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
adc36818 PM |
882 | int from_tty) |
883 | { | |
3a5c3e22 PA |
884 | xfree (b->cond_string); |
885 | b->cond_string = NULL; | |
adc36818 | 886 | |
3a5c3e22 | 887 | if (is_watchpoint (b)) |
adc36818 | 888 | { |
3a5c3e22 PA |
889 | struct watchpoint *w = (struct watchpoint *) b; |
890 | ||
4d01a485 | 891 | w->cond_exp.reset (); |
3a5c3e22 PA |
892 | } |
893 | else | |
894 | { | |
895 | struct bp_location *loc; | |
896 | ||
897 | for (loc = b->loc; loc; loc = loc->next) | |
898 | { | |
4d01a485 | 899 | loc->cond.reset (); |
b775012e LM |
900 | |
901 | /* No need to free the condition agent expression | |
902 | bytecode (if we have one). We will handle this | |
903 | when we go through update_global_location_list. */ | |
3a5c3e22 | 904 | } |
adc36818 | 905 | } |
adc36818 PM |
906 | |
907 | if (*exp == 0) | |
908 | { | |
909 | if (from_tty) | |
910 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
911 | } | |
912 | else | |
913 | { | |
bbc13ae3 | 914 | const char *arg = exp; |
cc59ec59 | 915 | |
adc36818 PM |
916 | /* I don't know if it matters whether this is the string the user |
917 | typed in or the decompiled expression. */ | |
918 | b->cond_string = xstrdup (arg); | |
919 | b->condition_not_parsed = 0; | |
920 | ||
921 | if (is_watchpoint (b)) | |
922 | { | |
3a5c3e22 PA |
923 | struct watchpoint *w = (struct watchpoint *) b; |
924 | ||
adc36818 PM |
925 | innermost_block = NULL; |
926 | arg = exp; | |
1bb9788d | 927 | w->cond_exp = parse_exp_1 (&arg, 0, 0, 0); |
adc36818 PM |
928 | if (*arg) |
929 | error (_("Junk at end of expression")); | |
3a5c3e22 | 930 | w->cond_exp_valid_block = innermost_block; |
adc36818 PM |
931 | } |
932 | else | |
933 | { | |
3a5c3e22 PA |
934 | struct bp_location *loc; |
935 | ||
adc36818 PM |
936 | for (loc = b->loc; loc; loc = loc->next) |
937 | { | |
938 | arg = exp; | |
939 | loc->cond = | |
1bb9788d TT |
940 | parse_exp_1 (&arg, loc->address, |
941 | block_for_pc (loc->address), 0); | |
adc36818 PM |
942 | if (*arg) |
943 | error (_("Junk at end of expression")); | |
944 | } | |
945 | } | |
946 | } | |
b775012e LM |
947 | mark_breakpoint_modified (b); |
948 | ||
8d3788bd | 949 | observer_notify_breakpoint_modified (b); |
adc36818 PM |
950 | } |
951 | ||
d55637df TT |
952 | /* Completion for the "condition" command. */ |
953 | ||
eb3ff9a5 | 954 | static void |
6f937416 | 955 | condition_completer (struct cmd_list_element *cmd, |
eb3ff9a5 | 956 | completion_tracker &tracker, |
6f937416 | 957 | const char *text, const char *word) |
d55637df | 958 | { |
6f937416 | 959 | const char *space; |
d55637df | 960 | |
f1735a53 TT |
961 | text = skip_spaces (text); |
962 | space = skip_to_space (text); | |
d55637df TT |
963 | if (*space == '\0') |
964 | { | |
965 | int len; | |
966 | struct breakpoint *b; | |
967 | VEC (char_ptr) *result = NULL; | |
968 | ||
969 | if (text[0] == '$') | |
970 | { | |
971 | /* We don't support completion of history indices. */ | |
eb3ff9a5 PA |
972 | if (!isdigit (text[1])) |
973 | complete_internalvar (tracker, &text[1]); | |
974 | return; | |
d55637df TT |
975 | } |
976 | ||
977 | /* We're completing the breakpoint number. */ | |
978 | len = strlen (text); | |
979 | ||
980 | ALL_BREAKPOINTS (b) | |
58ce7251 SDJ |
981 | { |
982 | char number[50]; | |
983 | ||
984 | xsnprintf (number, sizeof (number), "%d", b->number); | |
985 | ||
986 | if (strncmp (number, text, len) == 0) | |
eb3ff9a5 PA |
987 | { |
988 | gdb::unique_xmalloc_ptr<char> copy (xstrdup (number)); | |
989 | tracker.add_completion (std::move (copy)); | |
990 | } | |
58ce7251 | 991 | } |
d55637df | 992 | |
eb3ff9a5 | 993 | return; |
d55637df TT |
994 | } |
995 | ||
996 | /* We're completing the expression part. */ | |
f1735a53 | 997 | text = skip_spaces (space); |
eb3ff9a5 | 998 | expression_completer (cmd, tracker, text, word); |
d55637df TT |
999 | } |
1000 | ||
c906108c SS |
1001 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
1002 | ||
1003 | static void | |
fba45db2 | 1004 | condition_command (char *arg, int from_tty) |
c906108c | 1005 | { |
52f0bd74 | 1006 | struct breakpoint *b; |
c906108c | 1007 | char *p; |
52f0bd74 | 1008 | int bnum; |
c906108c SS |
1009 | |
1010 | if (arg == 0) | |
e2e0b3e5 | 1011 | error_no_arg (_("breakpoint number")); |
c906108c SS |
1012 | |
1013 | p = arg; | |
1014 | bnum = get_number (&p); | |
5c44784c | 1015 | if (bnum == 0) |
8a3fe4f8 | 1016 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
1017 | |
1018 | ALL_BREAKPOINTS (b) | |
1019 | if (b->number == bnum) | |
2f069f6f | 1020 | { |
6dddc817 DE |
1021 | /* Check if this breakpoint has a "stop" method implemented in an |
1022 | extension language. This method and conditions entered into GDB | |
1023 | from the CLI are mutually exclusive. */ | |
1024 | const struct extension_language_defn *extlang | |
1025 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
1026 | ||
1027 | if (extlang != NULL) | |
1028 | { | |
1029 | error (_("Only one stop condition allowed. There is currently" | |
1030 | " a %s stop condition defined for this breakpoint."), | |
1031 | ext_lang_capitalized_name (extlang)); | |
1032 | } | |
2566ad2d | 1033 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
1034 | |
1035 | if (is_breakpoint (b)) | |
44702360 | 1036 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 1037 | |
2f069f6f JB |
1038 | return; |
1039 | } | |
c906108c | 1040 | |
8a3fe4f8 | 1041 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
1042 | } |
1043 | ||
a7bdde9e VP |
1044 | /* Check that COMMAND do not contain commands that are suitable |
1045 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1046 | Throw if any such commands is found. */ |
1047 | ||
a7bdde9e VP |
1048 | static void |
1049 | check_no_tracepoint_commands (struct command_line *commands) | |
1050 | { | |
1051 | struct command_line *c; | |
cc59ec59 | 1052 | |
a7bdde9e VP |
1053 | for (c = commands; c; c = c->next) |
1054 | { | |
1055 | int i; | |
1056 | ||
1057 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
1058 | error (_("The 'while-stepping' command can " |
1059 | "only be used for tracepoints")); | |
a7bdde9e VP |
1060 | |
1061 | for (i = 0; i < c->body_count; ++i) | |
1062 | check_no_tracepoint_commands ((c->body_list)[i]); | |
1063 | ||
1064 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1065 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1066 | command directly. */ |
1067 | if (strstr (c->line, "collect ") == c->line) | |
1068 | error (_("The 'collect' command can only be used for tracepoints")); | |
1069 | ||
51661e93 VP |
1070 | if (strstr (c->line, "teval ") == c->line) |
1071 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1072 | } |
1073 | } | |
1074 | ||
c1fc2657 | 1075 | struct longjmp_breakpoint : public breakpoint |
3b0871f4 | 1076 | { |
c1fc2657 | 1077 | ~longjmp_breakpoint () override; |
3b0871f4 SM |
1078 | }; |
1079 | ||
d77f58be SS |
1080 | /* Encapsulate tests for different types of tracepoints. */ |
1081 | ||
3b0871f4 SM |
1082 | static bool |
1083 | is_tracepoint_type (bptype type) | |
d9b3f62e PA |
1084 | { |
1085 | return (type == bp_tracepoint | |
1086 | || type == bp_fast_tracepoint | |
1087 | || type == bp_static_tracepoint); | |
1088 | } | |
1089 | ||
3b0871f4 SM |
1090 | static bool |
1091 | is_longjmp_type (bptype type) | |
1092 | { | |
1093 | return type == bp_longjmp || type == bp_exception; | |
1094 | } | |
1095 | ||
a7bdde9e | 1096 | int |
d77f58be | 1097 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1098 | { |
d9b3f62e | 1099 | return is_tracepoint_type (b->type); |
a7bdde9e | 1100 | } |
d9b3f62e | 1101 | |
a5e364af SM |
1102 | /* Factory function to create an appropriate instance of breakpoint given |
1103 | TYPE. */ | |
1104 | ||
1105 | static std::unique_ptr<breakpoint> | |
1106 | new_breakpoint_from_type (bptype type) | |
1107 | { | |
1108 | breakpoint *b; | |
1109 | ||
1110 | if (is_tracepoint_type (type)) | |
c1fc2657 | 1111 | b = new tracepoint (); |
3b0871f4 | 1112 | else if (is_longjmp_type (type)) |
c1fc2657 | 1113 | b = new longjmp_breakpoint (); |
a5e364af SM |
1114 | else |
1115 | b = new breakpoint (); | |
1116 | ||
1117 | return std::unique_ptr<breakpoint> (b); | |
1118 | } | |
1119 | ||
e5dd4106 | 1120 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1121 | breakpoint. This function will throw an exception if a problem is |
1122 | found. */ | |
48cb2d85 | 1123 | |
95a42b64 TT |
1124 | static void |
1125 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1126 | struct command_line *commands) | |
48cb2d85 | 1127 | { |
d77f58be | 1128 | if (is_tracepoint (b)) |
a7bdde9e | 1129 | { |
c9a6ce02 | 1130 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1131 | struct command_line *c; |
1132 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1133 | |
1134 | /* Reset the while-stepping step count. The previous commands | |
1135 | might have included a while-stepping action, while the new | |
1136 | ones might not. */ | |
1137 | t->step_count = 0; | |
1138 | ||
1139 | /* We need to verify that each top-level element of commands is | |
1140 | valid for tracepoints, that there's at most one | |
1141 | while-stepping element, and that the while-stepping's body | |
1142 | has valid tracing commands excluding nested while-stepping. | |
1143 | We also need to validate the tracepoint action line in the | |
1144 | context of the tracepoint --- validate_actionline actually | |
1145 | has side effects, like setting the tracepoint's | |
1146 | while-stepping STEP_COUNT, in addition to checking if the | |
1147 | collect/teval actions parse and make sense in the | |
1148 | tracepoint's context. */ | |
a7bdde9e VP |
1149 | for (c = commands; c; c = c->next) |
1150 | { | |
a7bdde9e VP |
1151 | if (c->control_type == while_stepping_control) |
1152 | { | |
1153 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1154 | error (_("The 'while-stepping' command " |
1155 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1156 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1157 | error (_("The 'while-stepping' command " |
1158 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1159 | |
1160 | if (while_stepping) | |
3e43a32a MS |
1161 | error (_("The 'while-stepping' command " |
1162 | "can be used only once")); | |
a7bdde9e VP |
1163 | else |
1164 | while_stepping = c; | |
1165 | } | |
c9a6ce02 PA |
1166 | |
1167 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1168 | } |
1169 | if (while_stepping) | |
1170 | { | |
1171 | struct command_line *c2; | |
1172 | ||
1173 | gdb_assert (while_stepping->body_count == 1); | |
1174 | c2 = while_stepping->body_list[0]; | |
1175 | for (; c2; c2 = c2->next) | |
1176 | { | |
a7bdde9e VP |
1177 | if (c2->control_type == while_stepping_control) |
1178 | error (_("The 'while-stepping' command cannot be nested")); | |
1179 | } | |
1180 | } | |
1181 | } | |
1182 | else | |
1183 | { | |
1184 | check_no_tracepoint_commands (commands); | |
1185 | } | |
95a42b64 TT |
1186 | } |
1187 | ||
0fb4aa4b PA |
1188 | /* Return a vector of all the static tracepoints set at ADDR. The |
1189 | caller is responsible for releasing the vector. */ | |
1190 | ||
1191 | VEC(breakpoint_p) * | |
1192 | static_tracepoints_here (CORE_ADDR addr) | |
1193 | { | |
1194 | struct breakpoint *b; | |
1195 | VEC(breakpoint_p) *found = 0; | |
1196 | struct bp_location *loc; | |
1197 | ||
1198 | ALL_BREAKPOINTS (b) | |
1199 | if (b->type == bp_static_tracepoint) | |
1200 | { | |
1201 | for (loc = b->loc; loc; loc = loc->next) | |
1202 | if (loc->address == addr) | |
1203 | VEC_safe_push(breakpoint_p, found, b); | |
1204 | } | |
1205 | ||
1206 | return found; | |
1207 | } | |
1208 | ||
95a42b64 | 1209 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1210 | validate that only allowed commands are included. */ |
95a42b64 TT |
1211 | |
1212 | void | |
4a64f543 | 1213 | breakpoint_set_commands (struct breakpoint *b, |
93921405 | 1214 | command_line_up &&commands) |
95a42b64 | 1215 | { |
93921405 | 1216 | validate_commands_for_breakpoint (b, commands.get ()); |
a7bdde9e | 1217 | |
d1b0a7bf | 1218 | b->commands = std::move (commands); |
8d3788bd | 1219 | observer_notify_breakpoint_modified (b); |
48cb2d85 VP |
1220 | } |
1221 | ||
45a43567 TT |
1222 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1223 | is not the same as the "silent" that may appear in the breakpoint's | |
1224 | commands. */ | |
1225 | ||
1226 | void | |
1227 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1228 | { | |
1229 | int old_silent = b->silent; | |
1230 | ||
1231 | b->silent = silent; | |
1232 | if (old_silent != silent) | |
8d3788bd | 1233 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1234 | } |
1235 | ||
1236 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1237 | breakpoint work for any thread. */ | |
1238 | ||
1239 | void | |
1240 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1241 | { | |
1242 | int old_thread = b->thread; | |
1243 | ||
1244 | b->thread = thread; | |
1245 | if (old_thread != thread) | |
8d3788bd | 1246 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1247 | } |
1248 | ||
1249 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1250 | breakpoint work for any task. */ | |
1251 | ||
1252 | void | |
1253 | breakpoint_set_task (struct breakpoint *b, int task) | |
1254 | { | |
1255 | int old_task = b->task; | |
1256 | ||
1257 | b->task = task; | |
1258 | if (old_task != task) | |
8d3788bd | 1259 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1260 | } |
1261 | ||
95a42b64 TT |
1262 | void |
1263 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e | 1264 | { |
9a3c8263 | 1265 | struct breakpoint *b = (struct breakpoint *) closure; |
cc59ec59 | 1266 | |
6f937416 | 1267 | validate_actionline (line, b); |
a7bdde9e VP |
1268 | } |
1269 | ||
95a42b64 | 1270 | static void |
896b6bda | 1271 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1272 | struct command_line *control) |
95a42b64 | 1273 | { |
d1b0a7bf | 1274 | counted_command_line cmd; |
95a42b64 | 1275 | |
896b6bda PA |
1276 | std::string new_arg; |
1277 | ||
95a42b64 TT |
1278 | if (arg == NULL || !*arg) |
1279 | { | |
86b17b60 | 1280 | if (breakpoint_count - prev_breakpoint_count > 1) |
896b6bda PA |
1281 | new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1, |
1282 | breakpoint_count); | |
95a42b64 | 1283 | else if (breakpoint_count > 0) |
896b6bda | 1284 | new_arg = string_printf ("%d", breakpoint_count); |
48649e1b TT |
1285 | arg = new_arg.c_str (); |
1286 | } | |
1287 | ||
1288 | map_breakpoint_numbers | |
1289 | (arg, [&] (breakpoint *b) | |
1290 | { | |
1291 | if (cmd == NULL) | |
1292 | { | |
48649e1b | 1293 | if (control != NULL) |
d1b0a7bf | 1294 | cmd = copy_command_lines (control->body_list[0]); |
48649e1b TT |
1295 | else |
1296 | { | |
1297 | struct cleanup *old_chain; | |
1298 | char *str; | |
1299 | ||
1300 | str = xstrprintf (_("Type commands for breakpoint(s) " | |
1301 | "%s, one per line."), | |
1302 | arg); | |
1303 | ||
1304 | old_chain = make_cleanup (xfree, str); | |
1305 | ||
d1b0a7bf TT |
1306 | cmd = read_command_lines (str, |
1307 | from_tty, 1, | |
1308 | (is_tracepoint (b) | |
1309 | ? check_tracepoint_command : 0), | |
1310 | b); | |
48649e1b TT |
1311 | |
1312 | do_cleanups (old_chain); | |
1313 | } | |
48649e1b TT |
1314 | } |
1315 | ||
1316 | /* If a breakpoint was on the list more than once, we don't need to | |
1317 | do anything. */ | |
1318 | if (b->commands != cmd) | |
1319 | { | |
d1b0a7bf | 1320 | validate_commands_for_breakpoint (b, cmd.get ()); |
48649e1b TT |
1321 | b->commands = cmd; |
1322 | observer_notify_breakpoint_modified (b); | |
1323 | } | |
1324 | }); | |
95a42b64 | 1325 | |
48649e1b | 1326 | if (cmd == NULL) |
95a42b64 | 1327 | error (_("No breakpoints specified.")); |
95a42b64 TT |
1328 | } |
1329 | ||
1330 | static void | |
1331 | commands_command (char *arg, int from_tty) | |
1332 | { | |
1333 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1334 | } |
40c03ae8 EZ |
1335 | |
1336 | /* Like commands_command, but instead of reading the commands from | |
1337 | input stream, takes them from an already parsed command structure. | |
1338 | ||
1339 | This is used by cli-script.c to DTRT with breakpoint commands | |
1340 | that are part of if and while bodies. */ | |
1341 | enum command_control_type | |
896b6bda | 1342 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1343 | { |
95a42b64 TT |
1344 | commands_command_1 (arg, 0, cmd); |
1345 | return simple_control; | |
40c03ae8 | 1346 | } |
876fa593 JK |
1347 | |
1348 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1349 | ||
1350 | static int | |
1351 | bp_location_has_shadow (struct bp_location *bl) | |
1352 | { | |
1353 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1354 | return 0; | |
1355 | if (!bl->inserted) | |
1356 | return 0; | |
1357 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1358 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1359 | return 0; |
1360 | return 1; | |
1361 | } | |
1362 | ||
9d497a19 PA |
1363 | /* Update BUF, which is LEN bytes read from the target address |
1364 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1365 | contents. | |
1366 | ||
1367 | If READBUF is not NULL, this buffer must not overlap with the of | |
1368 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1369 | failed assertion internal error will be raised. */ | |
1370 | ||
1371 | static void | |
1372 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1373 | const gdb_byte *writebuf_org, | |
1374 | ULONGEST memaddr, LONGEST len, | |
1375 | struct bp_target_info *target_info, | |
1376 | struct gdbarch *gdbarch) | |
1377 | { | |
1378 | /* Now do full processing of the found relevant range of elements. */ | |
1379 | CORE_ADDR bp_addr = 0; | |
1380 | int bp_size = 0; | |
1381 | int bptoffset = 0; | |
1382 | ||
1383 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1384 | current_program_space->aspace, 0)) | |
1385 | { | |
1386 | /* The breakpoint is inserted in a different address space. */ | |
1387 | return; | |
1388 | } | |
1389 | ||
1390 | /* Addresses and length of the part of the breakpoint that | |
1391 | we need to copy. */ | |
1392 | bp_addr = target_info->placed_address; | |
1393 | bp_size = target_info->shadow_len; | |
1394 | ||
1395 | if (bp_addr + bp_size <= memaddr) | |
1396 | { | |
1397 | /* The breakpoint is entirely before the chunk of memory we are | |
1398 | reading. */ | |
1399 | return; | |
1400 | } | |
1401 | ||
1402 | if (bp_addr >= memaddr + len) | |
1403 | { | |
1404 | /* The breakpoint is entirely after the chunk of memory we are | |
1405 | reading. */ | |
1406 | return; | |
1407 | } | |
1408 | ||
1409 | /* Offset within shadow_contents. */ | |
1410 | if (bp_addr < memaddr) | |
1411 | { | |
1412 | /* Only copy the second part of the breakpoint. */ | |
1413 | bp_size -= memaddr - bp_addr; | |
1414 | bptoffset = memaddr - bp_addr; | |
1415 | bp_addr = memaddr; | |
1416 | } | |
1417 | ||
1418 | if (bp_addr + bp_size > memaddr + len) | |
1419 | { | |
1420 | /* Only copy the first part of the breakpoint. */ | |
1421 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1422 | } | |
1423 | ||
1424 | if (readbuf != NULL) | |
1425 | { | |
1426 | /* Verify that the readbuf buffer does not overlap with the | |
1427 | shadow_contents buffer. */ | |
1428 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1429 | || readbuf >= (target_info->shadow_contents | |
1430 | + target_info->shadow_len)); | |
1431 | ||
1432 | /* Update the read buffer with this inserted breakpoint's | |
1433 | shadow. */ | |
1434 | memcpy (readbuf + bp_addr - memaddr, | |
1435 | target_info->shadow_contents + bptoffset, bp_size); | |
1436 | } | |
1437 | else | |
1438 | { | |
1439 | const unsigned char *bp; | |
0d5ed153 MR |
1440 | CORE_ADDR addr = target_info->reqstd_address; |
1441 | int placed_size; | |
9d497a19 PA |
1442 | |
1443 | /* Update the shadow with what we want to write to memory. */ | |
1444 | memcpy (target_info->shadow_contents + bptoffset, | |
1445 | writebuf_org + bp_addr - memaddr, bp_size); | |
1446 | ||
1447 | /* Determine appropriate breakpoint contents and size for this | |
1448 | address. */ | |
0d5ed153 | 1449 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1450 | |
1451 | /* Update the final write buffer with this inserted | |
1452 | breakpoint's INSN. */ | |
1453 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1454 | } | |
1455 | } | |
1456 | ||
8defab1a | 1457 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1458 | by replacing any memory breakpoints with their shadowed contents. |
1459 | ||
35c63cd8 JB |
1460 | If READBUF is not NULL, this buffer must not overlap with any of |
1461 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1462 | a failed assertion internal error will be raised. | |
1463 | ||
876fa593 | 1464 | The range of shadowed area by each bp_location is: |
f5336ca5 PA |
1465 | bl->address - bp_locations_placed_address_before_address_max |
1466 | up to bl->address + bp_locations_shadow_len_after_address_max | |
876fa593 JK |
1467 | The range we were requested to resolve shadows for is: |
1468 | memaddr ... memaddr + len | |
1469 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 | 1470 | memaddr + len <= (bl->address |
f5336ca5 | 1471 | - bp_locations_placed_address_before_address_max) |
876fa593 | 1472 | and: |
f5336ca5 | 1473 | bl->address + bp_locations_shadow_len_after_address_max <= memaddr */ |
c906108c | 1474 | |
8defab1a | 1475 | void |
f0ba3972 PA |
1476 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1477 | const gdb_byte *writebuf_org, | |
1478 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1479 | { |
4a64f543 MS |
1480 | /* Left boundary, right boundary and median element of our binary |
1481 | search. */ | |
876fa593 JK |
1482 | unsigned bc_l, bc_r, bc; |
1483 | ||
4a64f543 MS |
1484 | /* Find BC_L which is a leftmost element which may affect BUF |
1485 | content. It is safe to report lower value but a failure to | |
1486 | report higher one. */ | |
876fa593 JK |
1487 | |
1488 | bc_l = 0; | |
f5336ca5 | 1489 | bc_r = bp_locations_count; |
876fa593 JK |
1490 | while (bc_l + 1 < bc_r) |
1491 | { | |
35df4500 | 1492 | struct bp_location *bl; |
876fa593 JK |
1493 | |
1494 | bc = (bc_l + bc_r) / 2; | |
f5336ca5 | 1495 | bl = bp_locations[bc]; |
876fa593 | 1496 | |
4a64f543 MS |
1497 | /* Check first BL->ADDRESS will not overflow due to the added |
1498 | constant. Then advance the left boundary only if we are sure | |
1499 | the BC element can in no way affect the BUF content (MEMADDR | |
1500 | to MEMADDR + LEN range). | |
876fa593 | 1501 | |
f5336ca5 | 1502 | Use the BP_LOCATIONS_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
4a64f543 MS |
1503 | offset so that we cannot miss a breakpoint with its shadow |
1504 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1505 | |
f5336ca5 | 1506 | if ((bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1507 | >= bl->address) |
f5336ca5 | 1508 | && (bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1509 | <= memaddr)) |
876fa593 JK |
1510 | bc_l = bc; |
1511 | else | |
1512 | bc_r = bc; | |
1513 | } | |
1514 | ||
128070bb PA |
1515 | /* Due to the binary search above, we need to make sure we pick the |
1516 | first location that's at BC_L's address. E.g., if there are | |
1517 | multiple locations at the same address, BC_L may end up pointing | |
1518 | at a duplicate location, and miss the "master"/"inserted" | |
1519 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1520 | B: | |
1521 | ||
1522 | L1@A, L2@A, L3@B, ... | |
1523 | ||
1524 | BC_L could end up pointing at location L2, while the "master" | |
1525 | location could be L1. Since the `loc->inserted' flag is only set | |
1526 | on "master" locations, we'd forget to restore the shadow of L1 | |
1527 | and L2. */ | |
1528 | while (bc_l > 0 | |
f5336ca5 | 1529 | && bp_locations[bc_l]->address == bp_locations[bc_l - 1]->address) |
128070bb PA |
1530 | bc_l--; |
1531 | ||
876fa593 JK |
1532 | /* Now do full processing of the found relevant range of elements. */ |
1533 | ||
f5336ca5 | 1534 | for (bc = bc_l; bc < bp_locations_count; bc++) |
c5aa993b | 1535 | { |
f5336ca5 | 1536 | struct bp_location *bl = bp_locations[bc]; |
876fa593 | 1537 | |
35df4500 TJB |
1538 | /* bp_location array has BL->OWNER always non-NULL. */ |
1539 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1540 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1541 | bl->owner->number); |
ffce0d52 | 1542 | |
e5dd4106 | 1543 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1544 | content. */ |
1545 | ||
f5336ca5 PA |
1546 | if (bl->address >= bp_locations_placed_address_before_address_max |
1547 | && memaddr + len <= (bl->address | |
1548 | - bp_locations_placed_address_before_address_max)) | |
876fa593 JK |
1549 | break; |
1550 | ||
35df4500 | 1551 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1552 | continue; |
6c95b8df | 1553 | |
9d497a19 PA |
1554 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1555 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1556 | } | |
c906108c | 1557 | } |
9d497a19 | 1558 | |
c906108c | 1559 | \f |
c5aa993b | 1560 | |
b775012e LM |
1561 | /* Return true if BPT is either a software breakpoint or a hardware |
1562 | breakpoint. */ | |
1563 | ||
1564 | int | |
1565 | is_breakpoint (const struct breakpoint *bpt) | |
1566 | { | |
1567 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1568 | || bpt->type == bp_hardware_breakpoint |
1569 | || bpt->type == bp_dprintf); | |
b775012e LM |
1570 | } |
1571 | ||
60e1c644 PA |
1572 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1573 | ||
a5606eee | 1574 | static int |
d77f58be | 1575 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1576 | { |
1577 | return (bpt->type == bp_hardware_watchpoint | |
1578 | || bpt->type == bp_read_watchpoint | |
1579 | || bpt->type == bp_access_watchpoint); | |
1580 | } | |
7270d8f2 | 1581 | |
60e1c644 PA |
1582 | /* Return true if BPT is of any watchpoint kind, hardware or |
1583 | software. */ | |
1584 | ||
3a5c3e22 | 1585 | int |
d77f58be | 1586 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1587 | { |
1588 | return (is_hardware_watchpoint (bpt) | |
1589 | || bpt->type == bp_watchpoint); | |
1590 | } | |
1591 | ||
3a5c3e22 PA |
1592 | /* Returns true if the current thread and its running state are safe |
1593 | to evaluate or update watchpoint B. Watchpoints on local | |
1594 | expressions need to be evaluated in the context of the thread that | |
1595 | was current when the watchpoint was created, and, that thread needs | |
1596 | to be stopped to be able to select the correct frame context. | |
1597 | Watchpoints on global expressions can be evaluated on any thread, | |
1598 | and in any state. It is presently left to the target allowing | |
1599 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1600 | |
1601 | static int | |
3a5c3e22 | 1602 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1603 | { |
c1fc2657 | 1604 | return (b->pspace == current_program_space |
d0d8b0c6 JK |
1605 | && (ptid_equal (b->watchpoint_thread, null_ptid) |
1606 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1607 | && !is_executing (inferior_ptid)))); | |
f6bc2008 PA |
1608 | } |
1609 | ||
d0fb5eae JK |
1610 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1611 | associated bp_watchpoint_scope breakpoint. */ | |
1612 | ||
1613 | static void | |
3a5c3e22 | 1614 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1615 | { |
c1fc2657 | 1616 | if (w->related_breakpoint != w) |
d0fb5eae | 1617 | { |
c1fc2657 SM |
1618 | gdb_assert (w->related_breakpoint->type == bp_watchpoint_scope); |
1619 | gdb_assert (w->related_breakpoint->related_breakpoint == w); | |
1620 | w->related_breakpoint->disposition = disp_del_at_next_stop; | |
1621 | w->related_breakpoint->related_breakpoint = w->related_breakpoint; | |
1622 | w->related_breakpoint = w; | |
d0fb5eae | 1623 | } |
c1fc2657 | 1624 | w->disposition = disp_del_at_next_stop; |
d0fb5eae JK |
1625 | } |
1626 | ||
bb9d5f81 PP |
1627 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1628 | watchpoint W. */ | |
1629 | ||
1630 | static struct value * | |
1631 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1632 | { | |
1633 | struct value *bit_val; | |
1634 | ||
1635 | if (val == NULL) | |
1636 | return NULL; | |
1637 | ||
1638 | bit_val = allocate_value (value_type (val)); | |
1639 | ||
1640 | unpack_value_bitfield (bit_val, | |
1641 | w->val_bitpos, | |
1642 | w->val_bitsize, | |
1643 | value_contents_for_printing (val), | |
1644 | value_offset (val), | |
1645 | val); | |
1646 | ||
1647 | return bit_val; | |
1648 | } | |
1649 | ||
c6d81124 PA |
1650 | /* Allocate a dummy location and add it to B, which must be a software |
1651 | watchpoint. This is required because even if a software watchpoint | |
1652 | is not watching any memory, bpstat_stop_status requires a location | |
1653 | to be able to report stops. */ | |
1654 | ||
1655 | static void | |
1656 | software_watchpoint_add_no_memory_location (struct breakpoint *b, | |
1657 | struct program_space *pspace) | |
1658 | { | |
1659 | gdb_assert (b->type == bp_watchpoint && b->loc == NULL); | |
1660 | ||
1661 | b->loc = allocate_bp_location (b); | |
1662 | b->loc->pspace = pspace; | |
1663 | b->loc->address = -1; | |
1664 | b->loc->length = -1; | |
1665 | } | |
1666 | ||
1667 | /* Returns true if B is a software watchpoint that is not watching any | |
1668 | memory (e.g., "watch $pc"). */ | |
1669 | ||
1670 | static int | |
1671 | is_no_memory_software_watchpoint (struct breakpoint *b) | |
1672 | { | |
1673 | return (b->type == bp_watchpoint | |
1674 | && b->loc != NULL | |
1675 | && b->loc->next == NULL | |
1676 | && b->loc->address == -1 | |
1677 | && b->loc->length == -1); | |
1678 | } | |
1679 | ||
567e1b4e JB |
1680 | /* Assuming that B is a watchpoint: |
1681 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1682 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1683 | - Evaluate the condition if there is one, and store the result |
1684 | in b->loc->cond. | |
a5606eee VP |
1685 | - Update the list of values that must be watched in B->loc. |
1686 | ||
4a64f543 MS |
1687 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1688 | nothing. If this is local watchpoint that is out of scope, delete | |
1689 | it. | |
1690 | ||
1691 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1692 | removed + inserted on each stop here. Normal breakpoints must | |
1693 | never be removed because they might be missed by a running thread | |
1694 | when debugging in non-stop mode. On the other hand, hardware | |
1695 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1696 | to each LWP since they are stored in each LWP's hardware debug | |
1697 | registers. Therefore, such LWP must be stopped first in order to | |
1698 | be able to modify its hardware watchpoints. | |
1699 | ||
1700 | Hardware watchpoints must be reset exactly once after being | |
1701 | presented to the user. It cannot be done sooner, because it would | |
1702 | reset the data used to present the watchpoint hit to the user. And | |
1703 | it must not be done later because it could display the same single | |
1704 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1705 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1706 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1707 | not user-visible - its hit is suppressed if the memory content has | |
1708 | not changed. | |
1709 | ||
1710 | The following constraints influence the location where we can reset | |
1711 | hardware watchpoints: | |
1712 | ||
1713 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1714 | called several times when GDB stops. | |
1715 | ||
1716 | [linux] | |
1717 | * Multiple hardware watchpoints can be hit at the same time, | |
1718 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1719 | hit at a time as the reason for stopping, and all the other hits | |
1720 | are presented later, one after the other, each time the user | |
1721 | requests the execution to be resumed. Execution is not resumed | |
1722 | for the threads still having pending hit event stored in | |
1723 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1724 | the inferior on the first stop the thread hit event is kept being | |
1725 | reported from its cached value by linux_nat_stopped_data_address | |
1726 | until the real thread resume happens after the watchpoint gets | |
1727 | presented and thus its LWP_INFO->STATUS gets reset. | |
1728 | ||
1729 | Therefore the hardware watchpoint hit can get safely reset on the | |
1730 | watchpoint removal from inferior. */ | |
a79d3c27 | 1731 | |
b40ce68a | 1732 | static void |
3a5c3e22 | 1733 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1734 | { |
a5606eee | 1735 | int within_current_scope; |
a5606eee | 1736 | struct frame_id saved_frame_id; |
66076460 | 1737 | int frame_saved; |
a5606eee | 1738 | |
f6bc2008 PA |
1739 | /* If this is a local watchpoint, we only want to check if the |
1740 | watchpoint frame is in scope if the current thread is the thread | |
1741 | that was used to create the watchpoint. */ | |
1742 | if (!watchpoint_in_thread_scope (b)) | |
1743 | return; | |
1744 | ||
c1fc2657 | 1745 | if (b->disposition == disp_del_at_next_stop) |
a5606eee VP |
1746 | return; |
1747 | ||
66076460 | 1748 | frame_saved = 0; |
a5606eee VP |
1749 | |
1750 | /* Determine if the watchpoint is within scope. */ | |
1751 | if (b->exp_valid_block == NULL) | |
1752 | within_current_scope = 1; | |
1753 | else | |
1754 | { | |
b5db5dfc UW |
1755 | struct frame_info *fi = get_current_frame (); |
1756 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1757 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1758 | ||
c9cf6e20 MG |
1759 | /* If we're at a point where the stack has been destroyed |
1760 | (e.g. in a function epilogue), unwinding may not work | |
1761 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1762 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1763 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1764 | return; |
66076460 DJ |
1765 | |
1766 | /* Save the current frame's ID so we can restore it after | |
1767 | evaluating the watchpoint expression on its own frame. */ | |
1768 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1769 | took a frame parameter, so that we didn't have to change the | |
1770 | selected frame. */ | |
1771 | frame_saved = 1; | |
1772 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1773 | ||
a5606eee VP |
1774 | fi = frame_find_by_id (b->watchpoint_frame); |
1775 | within_current_scope = (fi != NULL); | |
1776 | if (within_current_scope) | |
1777 | select_frame (fi); | |
1778 | } | |
1779 | ||
b5db5dfc UW |
1780 | /* We don't free locations. They are stored in the bp_location array |
1781 | and update_global_location_list will eventually delete them and | |
1782 | remove breakpoints if needed. */ | |
c1fc2657 | 1783 | b->loc = NULL; |
b5db5dfc | 1784 | |
a5606eee VP |
1785 | if (within_current_scope && reparse) |
1786 | { | |
bbc13ae3 | 1787 | const char *s; |
d63d0675 | 1788 | |
4d01a485 | 1789 | b->exp.reset (); |
d63d0675 | 1790 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1791 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1792 | /* If the meaning of expression itself changed, the old value is |
1793 | no longer relevant. We don't want to report a watchpoint hit | |
1794 | to the user when the old value and the new value may actually | |
1795 | be completely different objects. */ | |
1796 | value_free (b->val); | |
fa4727a6 DJ |
1797 | b->val = NULL; |
1798 | b->val_valid = 0; | |
60e1c644 PA |
1799 | |
1800 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1801 | expression is stored in the breakpoint object, not in the | |
1802 | locations (re)created below. */ | |
c1fc2657 | 1803 | if (b->cond_string != NULL) |
60e1c644 | 1804 | { |
4d01a485 | 1805 | b->cond_exp.reset (); |
60e1c644 | 1806 | |
c1fc2657 | 1807 | s = b->cond_string; |
1bb9788d | 1808 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1809 | } |
a5606eee | 1810 | } |
a5606eee VP |
1811 | |
1812 | /* If we failed to parse the expression, for example because | |
1813 | it refers to a global variable in a not-yet-loaded shared library, | |
1814 | don't try to insert watchpoint. We don't automatically delete | |
1815 | such watchpoint, though, since failure to parse expression | |
1816 | is different from out-of-scope watchpoint. */ | |
e8369a73 | 1817 | if (!target_has_execution) |
2d134ed3 PA |
1818 | { |
1819 | /* Without execution, memory can't change. No use to try and | |
1820 | set watchpoint locations. The watchpoint will be reset when | |
1821 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
1822 | if (!can_use_hw_watchpoints) |
1823 | { | |
c1fc2657 SM |
1824 | if (b->ops->works_in_software_mode (b)) |
1825 | b->type = bp_watchpoint; | |
e8369a73 | 1826 | else |
638aa5a1 AB |
1827 | error (_("Can't set read/access watchpoint when " |
1828 | "hardware watchpoints are disabled.")); | |
e8369a73 | 1829 | } |
2d134ed3 PA |
1830 | } |
1831 | else if (within_current_scope && b->exp) | |
a5606eee | 1832 | { |
0cf6dd15 | 1833 | int pc = 0; |
fa4727a6 | 1834 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1835 | struct program_space *frame_pspace; |
a5606eee | 1836 | |
4d01a485 | 1837 | fetch_subexp_value (b->exp.get (), &pc, &v, &result, &val_chain, 0); |
a5606eee | 1838 | |
a5606eee VP |
1839 | /* Avoid setting b->val if it's already set. The meaning of |
1840 | b->val is 'the last value' user saw, and we should update | |
1841 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1842 | happens, the code that reports it updates b->val directly. |
1843 | We don't keep track of the memory value for masked | |
1844 | watchpoints. */ | |
c1fc2657 | 1845 | if (!b->val_valid && !is_masked_watchpoint (b)) |
fa4727a6 | 1846 | { |
bb9d5f81 PP |
1847 | if (b->val_bitsize != 0) |
1848 | { | |
1849 | v = extract_bitfield_from_watchpoint_value (b, v); | |
1850 | if (v != NULL) | |
1851 | release_value (v); | |
1852 | } | |
fa4727a6 DJ |
1853 | b->val = v; |
1854 | b->val_valid = 1; | |
1855 | } | |
a5606eee | 1856 | |
2d134ed3 PA |
1857 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1858 | ||
a5606eee | 1859 | /* Look at each value on the value chain. */ |
9fa40276 | 1860 | for (v = val_chain; v; v = value_next (v)) |
a5606eee VP |
1861 | { |
1862 | /* If it's a memory location, and GDB actually needed | |
1863 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1864 | must watch it. If the first value returned is |
1865 | still lazy, that means an error occurred reading it; | |
1866 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1867 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1868 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1869 | { |
1870 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1871 | |
a5606eee VP |
1872 | /* We only watch structs and arrays if user asked |
1873 | for it explicitly, never if they just happen to | |
1874 | appear in the middle of some value chain. */ | |
fa4727a6 | 1875 | if (v == result |
a5606eee VP |
1876 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1877 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1878 | { | |
1879 | CORE_ADDR addr; | |
f486487f | 1880 | enum target_hw_bp_type type; |
a5606eee | 1881 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
1882 | int bitpos = 0, bitsize = 0; |
1883 | ||
1884 | if (value_bitsize (v) != 0) | |
1885 | { | |
1886 | /* Extract the bit parameters out from the bitfield | |
1887 | sub-expression. */ | |
1888 | bitpos = value_bitpos (v); | |
1889 | bitsize = value_bitsize (v); | |
1890 | } | |
1891 | else if (v == result && b->val_bitsize != 0) | |
1892 | { | |
1893 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
1894 | lvalue whose bit parameters are saved in the fields | |
1895 | VAL_BITPOS and VAL_BITSIZE. */ | |
1896 | bitpos = b->val_bitpos; | |
1897 | bitsize = b->val_bitsize; | |
1898 | } | |
a5606eee | 1899 | |
42ae5230 | 1900 | addr = value_address (v); |
bb9d5f81 PP |
1901 | if (bitsize != 0) |
1902 | { | |
1903 | /* Skip the bytes that don't contain the bitfield. */ | |
1904 | addr += bitpos / 8; | |
1905 | } | |
1906 | ||
a5606eee | 1907 | type = hw_write; |
c1fc2657 | 1908 | if (b->type == bp_read_watchpoint) |
a5606eee | 1909 | type = hw_read; |
c1fc2657 | 1910 | else if (b->type == bp_access_watchpoint) |
a5606eee | 1911 | type = hw_access; |
3a5c3e22 | 1912 | |
c1fc2657 SM |
1913 | loc = allocate_bp_location (b); |
1914 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1915 | ; |
1916 | *tmp = loc; | |
a6d9a66e | 1917 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1918 | |
1919 | loc->pspace = frame_pspace; | |
a5606eee | 1920 | loc->address = addr; |
bb9d5f81 PP |
1921 | |
1922 | if (bitsize != 0) | |
1923 | { | |
1924 | /* Just cover the bytes that make up the bitfield. */ | |
1925 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
1926 | } | |
1927 | else | |
1928 | loc->length = TYPE_LENGTH (value_type (v)); | |
1929 | ||
a5606eee VP |
1930 | loc->watchpoint_type = type; |
1931 | } | |
1932 | } | |
9fa40276 TJB |
1933 | } |
1934 | ||
1935 | /* Change the type of breakpoint between hardware assisted or | |
1936 | an ordinary watchpoint depending on the hardware support | |
1937 | and free hardware slots. REPARSE is set when the inferior | |
1938 | is started. */ | |
a9634178 | 1939 | if (reparse) |
9fa40276 | 1940 | { |
e09342b5 | 1941 | int reg_cnt; |
9fa40276 TJB |
1942 | enum bp_loc_type loc_type; |
1943 | struct bp_location *bl; | |
a5606eee | 1944 | |
a9634178 | 1945 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1946 | |
1947 | if (reg_cnt) | |
9fa40276 TJB |
1948 | { |
1949 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 1950 | enum bptype type; |
9fa40276 | 1951 | |
a9634178 TJB |
1952 | /* Use an exact watchpoint when there's only one memory region to be |
1953 | watched, and only one debug register is needed to watch it. */ | |
1954 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1955 | ||
9fa40276 | 1956 | /* We need to determine how many resources are already |
e09342b5 TJB |
1957 | used for all other hardware watchpoints plus this one |
1958 | to see if we still have enough resources to also fit | |
a1398e0c PA |
1959 | this watchpoint in as well. */ |
1960 | ||
1961 | /* If this is a software watchpoint, we try to turn it | |
1962 | to a hardware one -- count resources as if B was of | |
1963 | hardware watchpoint type. */ | |
c1fc2657 | 1964 | type = b->type; |
a1398e0c PA |
1965 | if (type == bp_watchpoint) |
1966 | type = bp_hardware_watchpoint; | |
1967 | ||
1968 | /* This watchpoint may or may not have been placed on | |
1969 | the list yet at this point (it won't be in the list | |
1970 | if we're trying to create it for the first time, | |
1971 | through watch_command), so always account for it | |
1972 | manually. */ | |
1973 | ||
1974 | /* Count resources used by all watchpoints except B. */ | |
c1fc2657 | 1975 | i = hw_watchpoint_used_count_others (b, type, &other_type_used); |
a1398e0c PA |
1976 | |
1977 | /* Add in the resources needed for B. */ | |
c1fc2657 | 1978 | i += hw_watchpoint_use_count (b); |
a1398e0c PA |
1979 | |
1980 | target_resources_ok | |
1981 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 1982 | if (target_resources_ok <= 0) |
a9634178 | 1983 | { |
c1fc2657 | 1984 | int sw_mode = b->ops->works_in_software_mode (b); |
9c06b0b4 TJB |
1985 | |
1986 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
1987 | error (_("Target does not support this type of " |
1988 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
1989 | else if (target_resources_ok < 0 && !sw_mode) |
1990 | error (_("There are not enough available hardware " | |
1991 | "resources for this watchpoint.")); | |
a1398e0c PA |
1992 | |
1993 | /* Downgrade to software watchpoint. */ | |
c1fc2657 | 1994 | b->type = bp_watchpoint; |
a1398e0c PA |
1995 | } |
1996 | else | |
1997 | { | |
1998 | /* If this was a software watchpoint, we've just | |
1999 | found we have enough resources to turn it to a | |
2000 | hardware watchpoint. Otherwise, this is a | |
2001 | nop. */ | |
c1fc2657 | 2002 | b->type = type; |
a9634178 | 2003 | } |
9fa40276 | 2004 | } |
c1fc2657 | 2005 | else if (!b->ops->works_in_software_mode (b)) |
638aa5a1 AB |
2006 | { |
2007 | if (!can_use_hw_watchpoints) | |
2008 | error (_("Can't set read/access watchpoint when " | |
2009 | "hardware watchpoints are disabled.")); | |
2010 | else | |
2011 | error (_("Expression cannot be implemented with " | |
2012 | "read/access watchpoint.")); | |
2013 | } | |
9fa40276 | 2014 | else |
c1fc2657 | 2015 | b->type = bp_watchpoint; |
9fa40276 | 2016 | |
c1fc2657 | 2017 | loc_type = (b->type == bp_watchpoint? bp_loc_other |
9fa40276 | 2018 | : bp_loc_hardware_watchpoint); |
c1fc2657 | 2019 | for (bl = b->loc; bl; bl = bl->next) |
9fa40276 TJB |
2020 | bl->loc_type = loc_type; |
2021 | } | |
2022 | ||
2023 | for (v = val_chain; v; v = next) | |
2024 | { | |
a5606eee VP |
2025 | next = value_next (v); |
2026 | if (v != b->val) | |
2027 | value_free (v); | |
2028 | } | |
2029 | ||
c7437ca6 PA |
2030 | /* If a software watchpoint is not watching any memory, then the |
2031 | above left it without any location set up. But, | |
2032 | bpstat_stop_status requires a location to be able to report | |
2033 | stops, so make sure there's at least a dummy one. */ | |
c1fc2657 SM |
2034 | if (b->type == bp_watchpoint && b->loc == NULL) |
2035 | software_watchpoint_add_no_memory_location (b, frame_pspace); | |
a5606eee VP |
2036 | } |
2037 | else if (!within_current_scope) | |
7270d8f2 | 2038 | { |
ac74f770 MS |
2039 | printf_filtered (_("\ |
2040 | Watchpoint %d deleted because the program has left the block\n\ | |
2041 | in which its expression is valid.\n"), | |
c1fc2657 | 2042 | b->number); |
d0fb5eae | 2043 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 2044 | } |
a5606eee VP |
2045 | |
2046 | /* Restore the selected frame. */ | |
66076460 DJ |
2047 | if (frame_saved) |
2048 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
2049 | } |
2050 | ||
a5606eee | 2051 | |
74960c60 | 2052 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
2053 | inserted in the inferior. We don't differentiate the type of BL's owner |
2054 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
2055 | breakpoint_ops is not defined, because in insert_bp_location, | |
2056 | tracepoint's insert_location will not be called. */ | |
74960c60 | 2057 | static int |
35df4500 | 2058 | should_be_inserted (struct bp_location *bl) |
74960c60 | 2059 | { |
35df4500 | 2060 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
2061 | return 0; |
2062 | ||
35df4500 | 2063 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2064 | return 0; |
2065 | ||
35df4500 | 2066 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
2067 | return 0; |
2068 | ||
f8eba3c6 TT |
2069 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2070 | return 0; | |
2071 | ||
56710373 PA |
2072 | /* This is set for example, when we're attached to the parent of a |
2073 | vfork, and have detached from the child. The child is running | |
2074 | free, and we expect it to do an exec or exit, at which point the | |
2075 | OS makes the parent schedulable again (and the target reports | |
2076 | that the vfork is done). Until the child is done with the shared | |
2077 | memory region, do not insert breakpoints in the parent, otherwise | |
2078 | the child could still trip on the parent's breakpoints. Since | |
2079 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2080 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2081 | return 0; |
2082 | ||
31e77af2 | 2083 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2084 | location, except if the breakpoint is a single-step breakpoint, |
2085 | and the breakpoint's thread is the thread which is stepping past | |
2086 | a breakpoint. */ | |
31e77af2 PA |
2087 | if ((bl->loc_type == bp_loc_software_breakpoint |
2088 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2089 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2090 | bl->address) |
2091 | /* The single-step breakpoint may be inserted at the location | |
2092 | we're trying to step if the instruction branches to itself. | |
2093 | However, the instruction won't be executed at all and it may | |
2094 | break the semantics of the instruction, for example, the | |
2095 | instruction is a conditional branch or updates some flags. | |
2096 | We can't fix it unless GDB is able to emulate the instruction | |
2097 | or switch to displaced stepping. */ | |
2098 | && !(bl->owner->type == bp_single_step | |
2099 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 PA |
2100 | { |
2101 | if (debug_infrun) | |
2102 | { | |
2103 | fprintf_unfiltered (gdb_stdlog, | |
2104 | "infrun: skipping breakpoint: " | |
2105 | "stepping past insn at: %s\n", | |
2106 | paddress (bl->gdbarch, bl->address)); | |
2107 | } | |
2108 | return 0; | |
2109 | } | |
31e77af2 | 2110 | |
963f9c80 PA |
2111 | /* Don't insert watchpoints if we're trying to step past the |
2112 | instruction that triggered one. */ | |
2113 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2114 | && stepping_past_nonsteppable_watchpoint ()) | |
2115 | { | |
2116 | if (debug_infrun) | |
2117 | { | |
2118 | fprintf_unfiltered (gdb_stdlog, | |
2119 | "infrun: stepping past non-steppable watchpoint. " | |
2120 | "skipping watchpoint at %s:%d\n", | |
2121 | paddress (bl->gdbarch, bl->address), | |
2122 | bl->length); | |
2123 | } | |
2124 | return 0; | |
2125 | } | |
2126 | ||
74960c60 VP |
2127 | return 1; |
2128 | } | |
2129 | ||
934709f0 PW |
2130 | /* Same as should_be_inserted but does the check assuming |
2131 | that the location is not duplicated. */ | |
2132 | ||
2133 | static int | |
2134 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2135 | { | |
2136 | int result; | |
2137 | const int save_duplicate = bl->duplicate; | |
2138 | ||
2139 | bl->duplicate = 0; | |
2140 | result = should_be_inserted (bl); | |
2141 | bl->duplicate = save_duplicate; | |
2142 | return result; | |
2143 | } | |
2144 | ||
b775012e LM |
2145 | /* Parses a conditional described by an expression COND into an |
2146 | agent expression bytecode suitable for evaluation | |
2147 | by the bytecode interpreter. Return NULL if there was | |
2148 | any error during parsing. */ | |
2149 | ||
833177a4 | 2150 | static agent_expr_up |
b775012e LM |
2151 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2152 | { | |
833177a4 | 2153 | if (cond == NULL) |
b775012e LM |
2154 | return NULL; |
2155 | ||
833177a4 PA |
2156 | agent_expr_up aexpr; |
2157 | ||
b775012e LM |
2158 | /* We don't want to stop processing, so catch any errors |
2159 | that may show up. */ | |
492d29ea | 2160 | TRY |
b775012e | 2161 | { |
036e657b | 2162 | aexpr = gen_eval_for_expr (scope, cond); |
b775012e LM |
2163 | } |
2164 | ||
492d29ea | 2165 | CATCH (ex, RETURN_MASK_ERROR) |
b775012e LM |
2166 | { |
2167 | /* If we got here, it means the condition could not be parsed to a valid | |
2168 | bytecode expression and thus can't be evaluated on the target's side. | |
2169 | It's no use iterating through the conditions. */ | |
b775012e | 2170 | } |
492d29ea | 2171 | END_CATCH |
b775012e LM |
2172 | |
2173 | /* We have a valid agent expression. */ | |
2174 | return aexpr; | |
2175 | } | |
2176 | ||
2177 | /* Based on location BL, create a list of breakpoint conditions to be | |
2178 | passed on to the target. If we have duplicated locations with different | |
2179 | conditions, we will add such conditions to the list. The idea is that the | |
2180 | target will evaluate the list of conditions and will only notify GDB when | |
2181 | one of them is true. */ | |
2182 | ||
2183 | static void | |
2184 | build_target_condition_list (struct bp_location *bl) | |
2185 | { | |
2186 | struct bp_location **locp = NULL, **loc2p; | |
2187 | int null_condition_or_parse_error = 0; | |
2188 | int modified = bl->needs_update; | |
2189 | struct bp_location *loc; | |
2190 | ||
8b4f3082 | 2191 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2192 | bl->target_info.conditions.clear (); |
8b4f3082 | 2193 | |
b775012e LM |
2194 | /* This is only meaningful if the target is |
2195 | evaluating conditions and if the user has | |
2196 | opted for condition evaluation on the target's | |
2197 | side. */ | |
2198 | if (gdb_evaluates_breakpoint_condition_p () | |
2199 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2200 | return; | |
2201 | ||
2202 | /* Do a first pass to check for locations with no assigned | |
2203 | conditions or conditions that fail to parse to a valid agent expression | |
2204 | bytecode. If any of these happen, then it's no use to send conditions | |
2205 | to the target since this location will always trigger and generate a | |
2206 | response back to GDB. */ | |
2207 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2208 | { | |
2209 | loc = (*loc2p); | |
2210 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2211 | { | |
2212 | if (modified) | |
2213 | { | |
b775012e LM |
2214 | /* Re-parse the conditions since something changed. In that |
2215 | case we already freed the condition bytecodes (see | |
2216 | force_breakpoint_reinsertion). We just | |
2217 | need to parse the condition to bytecodes again. */ | |
833177a4 PA |
2218 | loc->cond_bytecode = parse_cond_to_aexpr (bl->address, |
2219 | loc->cond.get ()); | |
b775012e LM |
2220 | } |
2221 | ||
2222 | /* If we have a NULL bytecode expression, it means something | |
2223 | went wrong or we have a null condition expression. */ | |
2224 | if (!loc->cond_bytecode) | |
2225 | { | |
2226 | null_condition_or_parse_error = 1; | |
2227 | break; | |
2228 | } | |
2229 | } | |
2230 | } | |
2231 | ||
2232 | /* If any of these happened, it means we will have to evaluate the conditions | |
2233 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2234 | for all the other duplicate locations, thus we free all of them here. | |
2235 | ||
2236 | This is so we have a finer control over which locations' conditions are | |
2237 | being evaluated by GDB or the remote stub. */ | |
2238 | if (null_condition_or_parse_error) | |
2239 | { | |
2240 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2241 | { | |
2242 | loc = (*loc2p); | |
2243 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2244 | { | |
2245 | /* Only go as far as the first NULL bytecode is | |
2246 | located. */ | |
2247 | if (!loc->cond_bytecode) | |
2248 | return; | |
2249 | ||
833177a4 | 2250 | loc->cond_bytecode.reset (); |
b775012e LM |
2251 | } |
2252 | } | |
2253 | } | |
2254 | ||
2255 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2256 | for this location's address. */ | |
2257 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2258 | { | |
2259 | loc = (*loc2p); | |
2260 | if (loc->cond | |
2261 | && is_breakpoint (loc->owner) | |
2262 | && loc->pspace->num == bl->pspace->num | |
2263 | && loc->owner->enable_state == bp_enabled | |
2264 | && loc->enabled) | |
3cde5c42 PA |
2265 | { |
2266 | /* Add the condition to the vector. This will be used later | |
2267 | to send the conditions to the target. */ | |
2268 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2269 | } | |
b775012e LM |
2270 | } |
2271 | ||
2272 | return; | |
2273 | } | |
2274 | ||
d3ce09f5 SS |
2275 | /* Parses a command described by string CMD into an agent expression |
2276 | bytecode suitable for evaluation by the bytecode interpreter. | |
2277 | Return NULL if there was any error during parsing. */ | |
2278 | ||
833177a4 | 2279 | static agent_expr_up |
d3ce09f5 SS |
2280 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2281 | { | |
2282 | struct cleanup *old_cleanups = 0; | |
4d01a485 | 2283 | struct expression **argvec; |
bbc13ae3 KS |
2284 | const char *cmdrest; |
2285 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2286 | struct format_piece *fpieces; |
2287 | int nargs; | |
2288 | struct gdbarch *gdbarch = get_current_arch (); | |
2289 | ||
833177a4 | 2290 | if (cmd == NULL) |
d3ce09f5 SS |
2291 | return NULL; |
2292 | ||
2293 | cmdrest = cmd; | |
2294 | ||
2295 | if (*cmdrest == ',') | |
2296 | ++cmdrest; | |
f1735a53 | 2297 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2298 | |
2299 | if (*cmdrest++ != '"') | |
2300 | error (_("No format string following the location")); | |
2301 | ||
2302 | format_start = cmdrest; | |
2303 | ||
2304 | fpieces = parse_format_string (&cmdrest); | |
2305 | ||
2306 | old_cleanups = make_cleanup (free_format_pieces_cleanup, &fpieces); | |
2307 | ||
2308 | format_end = cmdrest; | |
2309 | ||
2310 | if (*cmdrest++ != '"') | |
2311 | error (_("Bad format string, non-terminated '\"'.")); | |
2312 | ||
f1735a53 | 2313 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2314 | |
2315 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2316 | error (_("Invalid argument syntax")); | |
2317 | ||
2318 | if (*cmdrest == ',') | |
2319 | cmdrest++; | |
f1735a53 | 2320 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2321 | |
2322 | /* For each argument, make an expression. */ | |
2323 | ||
2324 | argvec = (struct expression **) alloca (strlen (cmd) | |
2325 | * sizeof (struct expression *)); | |
2326 | ||
2327 | nargs = 0; | |
2328 | while (*cmdrest != '\0') | |
2329 | { | |
bbc13ae3 | 2330 | const char *cmd1; |
d3ce09f5 SS |
2331 | |
2332 | cmd1 = cmdrest; | |
4d01a485 PA |
2333 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
2334 | argvec[nargs++] = expr.release (); | |
d3ce09f5 SS |
2335 | cmdrest = cmd1; |
2336 | if (*cmdrest == ',') | |
2337 | ++cmdrest; | |
2338 | } | |
2339 | ||
833177a4 PA |
2340 | agent_expr_up aexpr; |
2341 | ||
d3ce09f5 SS |
2342 | /* We don't want to stop processing, so catch any errors |
2343 | that may show up. */ | |
492d29ea | 2344 | TRY |
d3ce09f5 | 2345 | { |
036e657b JB |
2346 | aexpr = gen_printf (scope, gdbarch, 0, 0, |
2347 | format_start, format_end - format_start, | |
2348 | fpieces, nargs, argvec); | |
d3ce09f5 | 2349 | } |
492d29ea | 2350 | CATCH (ex, RETURN_MASK_ERROR) |
d3ce09f5 SS |
2351 | { |
2352 | /* If we got here, it means the command could not be parsed to a valid | |
2353 | bytecode expression and thus can't be evaluated on the target's side. | |
2354 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2355 | } |
492d29ea PA |
2356 | END_CATCH |
2357 | ||
2358 | do_cleanups (old_cleanups); | |
d3ce09f5 | 2359 | |
d3ce09f5 SS |
2360 | /* We have a valid agent expression, return it. */ |
2361 | return aexpr; | |
2362 | } | |
2363 | ||
2364 | /* Based on location BL, create a list of breakpoint commands to be | |
2365 | passed on to the target. If we have duplicated locations with | |
2366 | different commands, we will add any such to the list. */ | |
2367 | ||
2368 | static void | |
2369 | build_target_command_list (struct bp_location *bl) | |
2370 | { | |
2371 | struct bp_location **locp = NULL, **loc2p; | |
2372 | int null_command_or_parse_error = 0; | |
2373 | int modified = bl->needs_update; | |
2374 | struct bp_location *loc; | |
2375 | ||
3cde5c42 PA |
2376 | /* Clear commands left over from a previous insert. */ |
2377 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2378 | |
41fac0cf | 2379 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2380 | return; |
2381 | ||
41fac0cf PA |
2382 | /* For now, limit to agent-style dprintf breakpoints. */ |
2383 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2384 | return; |
2385 | ||
41fac0cf PA |
2386 | /* For now, if we have any duplicate location that isn't a dprintf, |
2387 | don't install the target-side commands, as that would make the | |
2388 | breakpoint not be reported to the core, and we'd lose | |
2389 | control. */ | |
2390 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2391 | { | |
2392 | loc = (*loc2p); | |
2393 | if (is_breakpoint (loc->owner) | |
2394 | && loc->pspace->num == bl->pspace->num | |
2395 | && loc->owner->type != bp_dprintf) | |
2396 | return; | |
2397 | } | |
2398 | ||
d3ce09f5 SS |
2399 | /* Do a first pass to check for locations with no assigned |
2400 | conditions or conditions that fail to parse to a valid agent expression | |
2401 | bytecode. If any of these happen, then it's no use to send conditions | |
2402 | to the target since this location will always trigger and generate a | |
2403 | response back to GDB. */ | |
2404 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2405 | { | |
2406 | loc = (*loc2p); | |
2407 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2408 | { | |
2409 | if (modified) | |
2410 | { | |
d3ce09f5 SS |
2411 | /* Re-parse the commands since something changed. In that |
2412 | case we already freed the command bytecodes (see | |
2413 | force_breakpoint_reinsertion). We just | |
2414 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2415 | loc->cmd_bytecode |
2416 | = parse_cmd_to_aexpr (bl->address, | |
2417 | loc->owner->extra_string); | |
d3ce09f5 SS |
2418 | } |
2419 | ||
2420 | /* If we have a NULL bytecode expression, it means something | |
2421 | went wrong or we have a null command expression. */ | |
2422 | if (!loc->cmd_bytecode) | |
2423 | { | |
2424 | null_command_or_parse_error = 1; | |
2425 | break; | |
2426 | } | |
2427 | } | |
2428 | } | |
2429 | ||
2430 | /* If anything failed, then we're not doing target-side commands, | |
2431 | and so clean up. */ | |
2432 | if (null_command_or_parse_error) | |
2433 | { | |
2434 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2435 | { | |
2436 | loc = (*loc2p); | |
2437 | if (is_breakpoint (loc->owner) | |
2438 | && loc->pspace->num == bl->pspace->num) | |
2439 | { | |
2440 | /* Only go as far as the first NULL bytecode is | |
2441 | located. */ | |
40fb6c5e | 2442 | if (loc->cmd_bytecode == NULL) |
d3ce09f5 SS |
2443 | return; |
2444 | ||
833177a4 | 2445 | loc->cmd_bytecode.reset (); |
d3ce09f5 SS |
2446 | } |
2447 | } | |
2448 | } | |
2449 | ||
2450 | /* No NULL commands or failed bytecode generation. Build a command list | |
2451 | for this location's address. */ | |
2452 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2453 | { | |
2454 | loc = (*loc2p); | |
2455 | if (loc->owner->extra_string | |
2456 | && is_breakpoint (loc->owner) | |
2457 | && loc->pspace->num == bl->pspace->num | |
2458 | && loc->owner->enable_state == bp_enabled | |
2459 | && loc->enabled) | |
3cde5c42 PA |
2460 | { |
2461 | /* Add the command to the vector. This will be used later | |
2462 | to send the commands to the target. */ | |
2463 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2464 | } | |
d3ce09f5 SS |
2465 | } |
2466 | ||
2467 | bl->target_info.persist = 0; | |
2468 | /* Maybe flag this location as persistent. */ | |
2469 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2470 | bl->target_info.persist = 1; | |
2471 | } | |
2472 | ||
833b7ab5 YQ |
2473 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2474 | of breakpoint according to ADDR except single-step breakpoint. | |
2475 | Get the kind of single-step breakpoint according to the current | |
2476 | registers state. */ | |
cd6c3b4f YQ |
2477 | |
2478 | static int | |
2479 | breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr) | |
2480 | { | |
833b7ab5 YQ |
2481 | if (bl->owner->type == bp_single_step) |
2482 | { | |
2483 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2484 | struct regcache *regcache; | |
2485 | ||
2486 | regcache = get_thread_regcache (thr->ptid); | |
2487 | ||
2488 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2489 | regcache, addr); | |
2490 | } | |
2491 | else | |
2492 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2493 | } |
2494 | ||
35df4500 TJB |
2495 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2496 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2497 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2498 | Returns 0 for success, 1 if the bp_location type is not supported or |
2499 | -1 for failure. | |
879bfdc2 | 2500 | |
4a64f543 MS |
2501 | NOTE drow/2003-09-09: This routine could be broken down to an |
2502 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2503 | static int |
35df4500 | 2504 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2505 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2506 | int *disabled_breaks, |
dd61ec5c MW |
2507 | int *hw_breakpoint_error, |
2508 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2509 | { |
0000e5cc PA |
2510 | enum errors bp_err = GDB_NO_ERROR; |
2511 | const char *bp_err_message = NULL; | |
879bfdc2 | 2512 | |
b775012e | 2513 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2514 | return 0; |
2515 | ||
35c63cd8 JB |
2516 | /* Note we don't initialize bl->target_info, as that wipes out |
2517 | the breakpoint location's shadow_contents if the breakpoint | |
2518 | is still inserted at that location. This in turn breaks | |
2519 | target_read_memory which depends on these buffers when | |
2520 | a memory read is requested at the breakpoint location: | |
2521 | Once the target_info has been wiped, we fail to see that | |
2522 | we have a breakpoint inserted at that address and thus | |
2523 | read the breakpoint instead of returning the data saved in | |
2524 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2525 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2526 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2527 | bl->target_info.length = bl->length; |
8181d85f | 2528 | |
b775012e LM |
2529 | /* When working with target-side conditions, we must pass all the conditions |
2530 | for the same breakpoint address down to the target since GDB will not | |
2531 | insert those locations. With a list of breakpoint conditions, the target | |
2532 | can decide when to stop and notify GDB. */ | |
2533 | ||
2534 | if (is_breakpoint (bl->owner)) | |
2535 | { | |
2536 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2537 | build_target_command_list (bl); |
2538 | /* Reset the modification marker. */ | |
b775012e LM |
2539 | bl->needs_update = 0; |
2540 | } | |
2541 | ||
35df4500 TJB |
2542 | if (bl->loc_type == bp_loc_software_breakpoint |
2543 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2544 | { |
35df4500 | 2545 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2546 | { |
2547 | /* If the explicitly specified breakpoint type | |
2548 | is not hardware breakpoint, check the memory map to see | |
2549 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2550 | |
765dc015 VP |
2551 | Two important cases are: |
2552 | - location type is not hardware breakpoint, memory | |
2553 | is readonly. We change the type of the location to | |
2554 | hardware breakpoint. | |
4a64f543 MS |
2555 | - location type is hardware breakpoint, memory is |
2556 | read-write. This means we've previously made the | |
2557 | location hardware one, but then the memory map changed, | |
2558 | so we undo. | |
765dc015 | 2559 | |
4a64f543 MS |
2560 | When breakpoints are removed, remove_breakpoints will use |
2561 | location types we've just set here, the only possible | |
2562 | problem is that memory map has changed during running | |
2563 | program, but it's not going to work anyway with current | |
2564 | gdb. */ | |
765dc015 | 2565 | struct mem_region *mr |
0d5ed153 | 2566 | = lookup_mem_region (bl->target_info.reqstd_address); |
765dc015 VP |
2567 | |
2568 | if (mr) | |
2569 | { | |
2570 | if (automatic_hardware_breakpoints) | |
2571 | { | |
765dc015 VP |
2572 | enum bp_loc_type new_type; |
2573 | ||
2574 | if (mr->attrib.mode != MEM_RW) | |
2575 | new_type = bp_loc_hardware_breakpoint; | |
2576 | else | |
2577 | new_type = bp_loc_software_breakpoint; | |
2578 | ||
35df4500 | 2579 | if (new_type != bl->loc_type) |
765dc015 VP |
2580 | { |
2581 | static int said = 0; | |
cc59ec59 | 2582 | |
35df4500 | 2583 | bl->loc_type = new_type; |
765dc015 VP |
2584 | if (!said) |
2585 | { | |
3e43a32a MS |
2586 | fprintf_filtered (gdb_stdout, |
2587 | _("Note: automatically using " | |
2588 | "hardware breakpoints for " | |
2589 | "read-only addresses.\n")); | |
765dc015 VP |
2590 | said = 1; |
2591 | } | |
2592 | } | |
2593 | } | |
35df4500 | 2594 | else if (bl->loc_type == bp_loc_software_breakpoint |
0fec99e8 PA |
2595 | && mr->attrib.mode != MEM_RW) |
2596 | { | |
2597 | fprintf_unfiltered (tmp_error_stream, | |
2598 | _("Cannot insert breakpoint %d.\n" | |
2599 | "Cannot set software breakpoint " | |
2600 | "at read-only address %s\n"), | |
2601 | bl->owner->number, | |
2602 | paddress (bl->gdbarch, bl->address)); | |
2603 | return 1; | |
2604 | } | |
765dc015 VP |
2605 | } |
2606 | } | |
2607 | ||
879bfdc2 DJ |
2608 | /* First check to see if we have to handle an overlay. */ |
2609 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2610 | || bl->section == NULL |
2611 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2612 | { |
2613 | /* No overlay handling: just set the breakpoint. */ | |
492d29ea | 2614 | TRY |
dd61ec5c | 2615 | { |
0000e5cc PA |
2616 | int val; |
2617 | ||
dd61ec5c | 2618 | val = bl->owner->ops->insert_location (bl); |
0000e5cc PA |
2619 | if (val) |
2620 | bp_err = GENERIC_ERROR; | |
dd61ec5c | 2621 | } |
492d29ea | 2622 | CATCH (e, RETURN_MASK_ALL) |
dd61ec5c | 2623 | { |
0000e5cc PA |
2624 | bp_err = e.error; |
2625 | bp_err_message = e.message; | |
dd61ec5c | 2626 | } |
492d29ea | 2627 | END_CATCH |
879bfdc2 DJ |
2628 | } |
2629 | else | |
2630 | { | |
4a64f543 | 2631 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2632 | Shall we set a breakpoint at the LMA? */ |
2633 | if (!overlay_events_enabled) | |
2634 | { | |
2635 | /* Yes -- overlay event support is not active, | |
2636 | so we must try to set a breakpoint at the LMA. | |
2637 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2638 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2639 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2640 | bl->owner->number); |
879bfdc2 DJ |
2641 | else |
2642 | { | |
35df4500 TJB |
2643 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2644 | bl->section); | |
879bfdc2 | 2645 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2646 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2647 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2648 | |
2649 | /* No overlay handling: just set the breakpoint. */ | |
492d29ea | 2650 | TRY |
0000e5cc PA |
2651 | { |
2652 | int val; | |
2653 | ||
579c6ad9 | 2654 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2655 | = breakpoint_kind (bl, &addr); |
2656 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2657 | val = target_insert_breakpoint (bl->gdbarch, |
2658 | &bl->overlay_target_info); | |
2659 | if (val) | |
2660 | bp_err = GENERIC_ERROR; | |
2661 | } | |
492d29ea | 2662 | CATCH (e, RETURN_MASK_ALL) |
0000e5cc PA |
2663 | { |
2664 | bp_err = e.error; | |
2665 | bp_err_message = e.message; | |
2666 | } | |
492d29ea | 2667 | END_CATCH |
0000e5cc PA |
2668 | |
2669 | if (bp_err != GDB_NO_ERROR) | |
99361f52 | 2670 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2671 | "Overlay breakpoint %d " |
2672 | "failed: in ROM?\n", | |
35df4500 | 2673 | bl->owner->number); |
879bfdc2 DJ |
2674 | } |
2675 | } | |
2676 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2677 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2678 | { |
2679 | /* Yes. This overlay section is mapped into memory. */ | |
492d29ea | 2680 | TRY |
dd61ec5c | 2681 | { |
0000e5cc PA |
2682 | int val; |
2683 | ||
dd61ec5c | 2684 | val = bl->owner->ops->insert_location (bl); |
0000e5cc PA |
2685 | if (val) |
2686 | bp_err = GENERIC_ERROR; | |
dd61ec5c | 2687 | } |
492d29ea | 2688 | CATCH (e, RETURN_MASK_ALL) |
dd61ec5c | 2689 | { |
0000e5cc PA |
2690 | bp_err = e.error; |
2691 | bp_err_message = e.message; | |
dd61ec5c | 2692 | } |
492d29ea | 2693 | END_CATCH |
879bfdc2 DJ |
2694 | } |
2695 | else | |
2696 | { | |
2697 | /* No. This breakpoint will not be inserted. | |
2698 | No error, but do not mark the bp as 'inserted'. */ | |
2699 | return 0; | |
2700 | } | |
2701 | } | |
2702 | ||
0000e5cc | 2703 | if (bp_err != GDB_NO_ERROR) |
879bfdc2 DJ |
2704 | { |
2705 | /* Can't set the breakpoint. */ | |
0000e5cc PA |
2706 | |
2707 | /* In some cases, we might not be able to insert a | |
2708 | breakpoint in a shared library that has already been | |
2709 | removed, but we have not yet processed the shlib unload | |
2710 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2711 | breakpoint insertion themselves can't tell why the |
2712 | breakpoint insertion failed (e.g., the remote target | |
2713 | doesn't define error codes), so we must treat generic | |
2714 | errors as memory errors. */ | |
0000e5cc | 2715 | if ((bp_err == GENERIC_ERROR || bp_err == MEMORY_ERROR) |
076855f9 | 2716 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2717 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2718 | || shared_objfile_contains_address_p (bl->pspace, |
2719 | bl->address))) | |
879bfdc2 | 2720 | { |
4a64f543 | 2721 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2722 | bl->shlib_disabled = 1; |
8d3788bd | 2723 | observer_notify_breakpoint_modified (bl->owner); |
3fbb6ffa TJB |
2724 | if (!*disabled_breaks) |
2725 | { | |
2726 | fprintf_unfiltered (tmp_error_stream, | |
2727 | "Cannot insert breakpoint %d.\n", | |
2728 | bl->owner->number); | |
2729 | fprintf_unfiltered (tmp_error_stream, | |
2730 | "Temporarily disabling shared " | |
2731 | "library breakpoints:\n"); | |
2732 | } | |
2733 | *disabled_breaks = 1; | |
879bfdc2 | 2734 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2735 | "breakpoint #%d\n", bl->owner->number); |
0000e5cc | 2736 | return 0; |
879bfdc2 DJ |
2737 | } |
2738 | else | |
879bfdc2 | 2739 | { |
35df4500 | 2740 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2741 | { |
0000e5cc PA |
2742 | *hw_breakpoint_error = 1; |
2743 | *hw_bp_error_explained_already = bp_err_message != NULL; | |
dd61ec5c MW |
2744 | fprintf_unfiltered (tmp_error_stream, |
2745 | "Cannot insert hardware breakpoint %d%s", | |
0000e5cc PA |
2746 | bl->owner->number, bp_err_message ? ":" : ".\n"); |
2747 | if (bp_err_message != NULL) | |
2748 | fprintf_unfiltered (tmp_error_stream, "%s.\n", bp_err_message); | |
879bfdc2 DJ |
2749 | } |
2750 | else | |
2751 | { | |
0000e5cc PA |
2752 | if (bp_err_message == NULL) |
2753 | { | |
1ccbe998 | 2754 | std::string message |
0000e5cc PA |
2755 | = memory_error_message (TARGET_XFER_E_IO, |
2756 | bl->gdbarch, bl->address); | |
0000e5cc PA |
2757 | |
2758 | fprintf_unfiltered (tmp_error_stream, | |
2759 | "Cannot insert breakpoint %d.\n" | |
2760 | "%s\n", | |
1ccbe998 | 2761 | bl->owner->number, message.c_str ()); |
0000e5cc PA |
2762 | } |
2763 | else | |
2764 | { | |
2765 | fprintf_unfiltered (tmp_error_stream, | |
2766 | "Cannot insert breakpoint %d: %s\n", | |
2767 | bl->owner->number, | |
2768 | bp_err_message); | |
2769 | } | |
879bfdc2 | 2770 | } |
0000e5cc | 2771 | return 1; |
879bfdc2 DJ |
2772 | |
2773 | } | |
2774 | } | |
2775 | else | |
35df4500 | 2776 | bl->inserted = 1; |
879bfdc2 | 2777 | |
0000e5cc | 2778 | return 0; |
879bfdc2 DJ |
2779 | } |
2780 | ||
35df4500 | 2781 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2782 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2783 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2784 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2785 | { |
0000e5cc PA |
2786 | int val; |
2787 | ||
77b06cd7 TJB |
2788 | gdb_assert (bl->owner->ops != NULL |
2789 | && bl->owner->ops->insert_location != NULL); | |
2790 | ||
2791 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2792 | |
2793 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2794 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2795 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2796 | { |
2797 | struct bp_location *loc, **loc_temp; | |
2798 | ||
2799 | /* But don't try to insert it, if there's already another | |
2800 | hw_access location that would be considered a duplicate | |
2801 | of this one. */ | |
2802 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2803 | if (loc != bl |
85d721b8 | 2804 | && loc->watchpoint_type == hw_access |
35df4500 | 2805 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2806 | { |
35df4500 TJB |
2807 | bl->duplicate = 1; |
2808 | bl->inserted = 1; | |
2809 | bl->target_info = loc->target_info; | |
2810 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2811 | val = 0; |
2812 | break; | |
2813 | } | |
2814 | ||
2815 | if (val == 1) | |
2816 | { | |
77b06cd7 TJB |
2817 | bl->watchpoint_type = hw_access; |
2818 | val = bl->owner->ops->insert_location (bl); | |
2819 | ||
2820 | if (val) | |
2821 | /* Back to the original value. */ | |
2822 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2823 | } |
2824 | } | |
2825 | ||
35df4500 | 2826 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2827 | } |
2828 | ||
35df4500 | 2829 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2830 | { |
0000e5cc PA |
2831 | int val; |
2832 | ||
77b06cd7 TJB |
2833 | gdb_assert (bl->owner->ops != NULL |
2834 | && bl->owner->ops->insert_location != NULL); | |
2835 | ||
2836 | val = bl->owner->ops->insert_location (bl); | |
2837 | if (val) | |
2838 | { | |
2839 | bl->owner->enable_state = bp_disabled; | |
2840 | ||
2841 | if (val == 1) | |
2842 | warning (_("\ | |
2843 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2844 | of catchpoint."), bl->owner->number); | |
2845 | else | |
2846 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2847 | } | |
2848 | ||
2849 | bl->inserted = (val == 0); | |
1640b821 DJ |
2850 | |
2851 | /* We've already printed an error message if there was a problem | |
2852 | inserting this catchpoint, and we've disabled the catchpoint, | |
2853 | so just return success. */ | |
2854 | return 0; | |
879bfdc2 DJ |
2855 | } |
2856 | ||
2857 | return 0; | |
2858 | } | |
2859 | ||
6c95b8df PA |
2860 | /* This function is called when program space PSPACE is about to be |
2861 | deleted. It takes care of updating breakpoints to not reference | |
2862 | PSPACE anymore. */ | |
2863 | ||
2864 | void | |
2865 | breakpoint_program_space_exit (struct program_space *pspace) | |
2866 | { | |
2867 | struct breakpoint *b, *b_temp; | |
876fa593 | 2868 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2869 | |
2870 | /* Remove any breakpoint that was set through this program space. */ | |
2871 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2872 | { | |
2873 | if (b->pspace == pspace) | |
2874 | delete_breakpoint (b); | |
2875 | } | |
2876 | ||
2877 | /* Breakpoints set through other program spaces could have locations | |
2878 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2879 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2880 | { |
2881 | struct bp_location *tmp; | |
2882 | ||
2883 | if (loc->pspace == pspace) | |
2884 | { | |
2bdf28a0 | 2885 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2886 | if (loc->owner->loc == loc) |
2887 | loc->owner->loc = loc->next; | |
2888 | else | |
2889 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2890 | if (tmp->next == loc) | |
2891 | { | |
2892 | tmp->next = loc->next; | |
2893 | break; | |
2894 | } | |
2895 | } | |
2896 | } | |
2897 | ||
2898 | /* Now update the global location list to permanently delete the | |
2899 | removed locations above. */ | |
44702360 | 2900 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
2901 | } |
2902 | ||
74960c60 VP |
2903 | /* Make sure all breakpoints are inserted in inferior. |
2904 | Throws exception on any error. | |
2905 | A breakpoint that is already inserted won't be inserted | |
2906 | again, so calling this function twice is safe. */ | |
2907 | void | |
2908 | insert_breakpoints (void) | |
2909 | { | |
2910 | struct breakpoint *bpt; | |
2911 | ||
2912 | ALL_BREAKPOINTS (bpt) | |
2913 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2914 | { |
2915 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2916 | ||
2917 | update_watchpoint (w, 0 /* don't reparse. */); | |
2918 | } | |
74960c60 | 2919 | |
04086b45 PA |
2920 | /* Updating watchpoints creates new locations, so update the global |
2921 | location list. Explicitly tell ugll to insert locations and | |
2922 | ignore breakpoints_always_inserted_mode. */ | |
2923 | update_global_location_list (UGLL_INSERT); | |
74960c60 VP |
2924 | } |
2925 | ||
20388dd6 YQ |
2926 | /* Invoke CALLBACK for each of bp_location. */ |
2927 | ||
2928 | void | |
2929 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
2930 | { | |
2931 | struct bp_location *loc, **loc_tmp; | |
2932 | ||
2933 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
2934 | { | |
2935 | callback (loc, NULL); | |
2936 | } | |
2937 | } | |
2938 | ||
b775012e LM |
2939 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2940 | target. It is the case with deleting and disabling of breakpoints when using | |
2941 | always-inserted mode. */ | |
2942 | ||
2943 | static void | |
2944 | update_inserted_breakpoint_locations (void) | |
2945 | { | |
2946 | struct bp_location *bl, **blp_tmp; | |
2947 | int error_flag = 0; | |
2948 | int val = 0; | |
2949 | int disabled_breaks = 0; | |
2950 | int hw_breakpoint_error = 0; | |
dd61ec5c | 2951 | int hw_bp_details_reported = 0; |
b775012e | 2952 | |
d7e74731 | 2953 | string_file tmp_error_stream; |
b775012e LM |
2954 | |
2955 | /* Explicitly mark the warning -- this will only be printed if | |
2956 | there was an error. */ | |
d7e74731 | 2957 | tmp_error_stream.puts ("Warning:\n"); |
b775012e | 2958 | |
5ed8105e | 2959 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
b775012e LM |
2960 | |
2961 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
2962 | { | |
2963 | /* We only want to update software breakpoints and hardware | |
2964 | breakpoints. */ | |
2965 | if (!is_breakpoint (bl->owner)) | |
2966 | continue; | |
2967 | ||
2968 | /* We only want to update locations that are already inserted | |
2969 | and need updating. This is to avoid unwanted insertion during | |
2970 | deletion of breakpoints. */ | |
2971 | if (!bl->inserted || (bl->inserted && !bl->needs_update)) | |
2972 | continue; | |
2973 | ||
2974 | switch_to_program_space_and_thread (bl->pspace); | |
2975 | ||
2976 | /* For targets that support global breakpoints, there's no need | |
2977 | to select an inferior to insert breakpoint to. In fact, even | |
2978 | if we aren't attached to any process yet, we should still | |
2979 | insert breakpoints. */ | |
f5656ead | 2980 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
b775012e LM |
2981 | && ptid_equal (inferior_ptid, null_ptid)) |
2982 | continue; | |
2983 | ||
d7e74731 | 2984 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2985 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
2986 | if (val) |
2987 | error_flag = val; | |
2988 | } | |
2989 | ||
2990 | if (error_flag) | |
2991 | { | |
223ffa71 | 2992 | target_terminal::ours_for_output (); |
b775012e LM |
2993 | error_stream (tmp_error_stream); |
2994 | } | |
b775012e LM |
2995 | } |
2996 | ||
c30eee59 | 2997 | /* Used when starting or continuing the program. */ |
c906108c | 2998 | |
74960c60 VP |
2999 | static void |
3000 | insert_breakpoint_locations (void) | |
c906108c | 3001 | { |
a5606eee | 3002 | struct breakpoint *bpt; |
35df4500 | 3003 | struct bp_location *bl, **blp_tmp; |
eacd795a | 3004 | int error_flag = 0; |
c906108c | 3005 | int val = 0; |
3fbb6ffa | 3006 | int disabled_breaks = 0; |
81d0cc19 | 3007 | int hw_breakpoint_error = 0; |
dd61ec5c | 3008 | int hw_bp_error_explained_already = 0; |
c906108c | 3009 | |
d7e74731 PA |
3010 | string_file tmp_error_stream; |
3011 | ||
81d0cc19 GS |
3012 | /* Explicitly mark the warning -- this will only be printed if |
3013 | there was an error. */ | |
d7e74731 | 3014 | tmp_error_stream.puts ("Warning:\n"); |
6c95b8df | 3015 | |
5ed8105e | 3016 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3017 | |
35df4500 | 3018 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 3019 | { |
b775012e | 3020 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
3021 | continue; |
3022 | ||
4a64f543 MS |
3023 | /* There is no point inserting thread-specific breakpoints if |
3024 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
3025 | has BL->OWNER always non-NULL. */ | |
35df4500 | 3026 | if (bl->owner->thread != -1 |
5d5658a1 | 3027 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
3028 | continue; |
3029 | ||
35df4500 | 3030 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
3031 | |
3032 | /* For targets that support global breakpoints, there's no need | |
3033 | to select an inferior to insert breakpoint to. In fact, even | |
3034 | if we aren't attached to any process yet, we should still | |
3035 | insert breakpoints. */ | |
f5656ead | 3036 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
3037 | && ptid_equal (inferior_ptid, null_ptid)) |
3038 | continue; | |
3039 | ||
d7e74731 | 3040 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 3041 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 3042 | if (val) |
eacd795a | 3043 | error_flag = val; |
879bfdc2 | 3044 | } |
c906108c | 3045 | |
4a64f543 MS |
3046 | /* If we failed to insert all locations of a watchpoint, remove |
3047 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
3048 | ALL_BREAKPOINTS (bpt) |
3049 | { | |
3050 | int some_failed = 0; | |
3051 | struct bp_location *loc; | |
3052 | ||
3053 | if (!is_hardware_watchpoint (bpt)) | |
3054 | continue; | |
3055 | ||
d6b74ac4 | 3056 | if (!breakpoint_enabled (bpt)) |
a5606eee | 3057 | continue; |
74960c60 VP |
3058 | |
3059 | if (bpt->disposition == disp_del_at_next_stop) | |
3060 | continue; | |
a5606eee VP |
3061 | |
3062 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 3063 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
3064 | { |
3065 | some_failed = 1; | |
3066 | break; | |
3067 | } | |
3068 | if (some_failed) | |
3069 | { | |
3070 | for (loc = bpt->loc; loc; loc = loc->next) | |
3071 | if (loc->inserted) | |
834c0d03 | 3072 | remove_breakpoint (loc); |
a5606eee VP |
3073 | |
3074 | hw_breakpoint_error = 1; | |
d7e74731 PA |
3075 | tmp_error_stream.printf ("Could not insert " |
3076 | "hardware watchpoint %d.\n", | |
3077 | bpt->number); | |
eacd795a | 3078 | error_flag = -1; |
a5606eee VP |
3079 | } |
3080 | } | |
3081 | ||
eacd795a | 3082 | if (error_flag) |
81d0cc19 GS |
3083 | { |
3084 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
3085 | message about possibly exhausted resources. */ | |
dd61ec5c | 3086 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3087 | { |
d7e74731 | 3088 | tmp_error_stream.printf ("Could not insert hardware breakpoints:\n\ |
c6510018 | 3089 | You may have requested too many hardware breakpoints/watchpoints.\n"); |
81d0cc19 | 3090 | } |
223ffa71 | 3091 | target_terminal::ours_for_output (); |
81d0cc19 GS |
3092 | error_stream (tmp_error_stream); |
3093 | } | |
c906108c SS |
3094 | } |
3095 | ||
c30eee59 TJB |
3096 | /* Used when the program stops. |
3097 | Returns zero if successful, or non-zero if there was a problem | |
3098 | removing a breakpoint location. */ | |
3099 | ||
c906108c | 3100 | int |
fba45db2 | 3101 | remove_breakpoints (void) |
c906108c | 3102 | { |
35df4500 | 3103 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3104 | int val = 0; |
c906108c | 3105 | |
35df4500 | 3106 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3107 | { |
1e4d1764 | 3108 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3109 | val |= remove_breakpoint (bl); |
c5aa993b | 3110 | } |
3a1bae8e | 3111 | return val; |
c906108c SS |
3112 | } |
3113 | ||
49fa26b0 PA |
3114 | /* When a thread exits, remove breakpoints that are related to |
3115 | that thread. */ | |
3116 | ||
3117 | static void | |
3118 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3119 | { | |
3120 | struct breakpoint *b, *b_tmp; | |
3121 | ||
3122 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
3123 | { | |
5d5658a1 | 3124 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 PA |
3125 | { |
3126 | b->disposition = disp_del_at_next_stop; | |
3127 | ||
3128 | printf_filtered (_("\ | |
43792cf0 PA |
3129 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
3130 | b->number, print_thread_id (tp)); | |
49fa26b0 PA |
3131 | |
3132 | /* Hide it from the user. */ | |
3133 | b->number = 0; | |
3134 | } | |
3135 | } | |
3136 | } | |
3137 | ||
6c95b8df PA |
3138 | /* Remove breakpoints of process PID. */ |
3139 | ||
3140 | int | |
3141 | remove_breakpoints_pid (int pid) | |
3142 | { | |
35df4500 | 3143 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
3144 | int val; |
3145 | struct inferior *inf = find_inferior_pid (pid); | |
3146 | ||
35df4500 | 3147 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3148 | { |
35df4500 | 3149 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3150 | continue; |
3151 | ||
fc126975 | 3152 | if (bl->inserted && !bl->target_info.persist) |
6c95b8df | 3153 | { |
834c0d03 | 3154 | val = remove_breakpoint (bl); |
6c95b8df PA |
3155 | if (val != 0) |
3156 | return val; | |
3157 | } | |
3158 | } | |
3159 | return 0; | |
3160 | } | |
3161 | ||
c906108c | 3162 | int |
fba45db2 | 3163 | reattach_breakpoints (int pid) |
c906108c | 3164 | { |
35df4500 | 3165 | struct bp_location *bl, **blp_tmp; |
c906108c | 3166 | int val; |
dd61ec5c | 3167 | int dummy1 = 0, dummy2 = 0, dummy3 = 0; |
6c95b8df PA |
3168 | struct inferior *inf; |
3169 | struct thread_info *tp; | |
3170 | ||
3171 | tp = any_live_thread_of_process (pid); | |
3172 | if (tp == NULL) | |
3173 | return 1; | |
3174 | ||
3175 | inf = find_inferior_pid (pid); | |
6c95b8df | 3176 | |
2989a365 | 3177 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3178 | inferior_ptid = tp->ptid; |
a4954f26 | 3179 | |
d7e74731 | 3180 | string_file tmp_error_stream; |
c906108c | 3181 | |
35df4500 | 3182 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3183 | { |
35df4500 | 3184 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3185 | continue; |
3186 | ||
35df4500 | 3187 | if (bl->inserted) |
c5aa993b | 3188 | { |
35df4500 | 3189 | bl->inserted = 0; |
d7e74731 | 3190 | val = insert_bp_location (bl, &tmp_error_stream, &dummy1, &dummy2, &dummy3); |
c5aa993b | 3191 | if (val != 0) |
2989a365 | 3192 | return val; |
c5aa993b JM |
3193 | } |
3194 | } | |
c906108c SS |
3195 | return 0; |
3196 | } | |
3197 | ||
e58b0e63 PA |
3198 | static int internal_breakpoint_number = -1; |
3199 | ||
84f4c1fe PM |
3200 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3201 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3202 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3203 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3204 | breakpoint_count and that value incremented. Internal breakpoints |
3205 | do not set the internal var bpnum. */ | |
3206 | static void | |
3207 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3208 | { | |
3209 | if (internal) | |
3210 | b->number = internal_breakpoint_number--; | |
3211 | else | |
3212 | { | |
3213 | set_breakpoint_count (breakpoint_count + 1); | |
3214 | b->number = breakpoint_count; | |
3215 | } | |
3216 | } | |
3217 | ||
e62c965a | 3218 | static struct breakpoint * |
a6d9a66e | 3219 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3220 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3221 | const struct breakpoint_ops *ops) |
e62c965a | 3222 | { |
51abb421 | 3223 | symtab_and_line sal; |
e62c965a PP |
3224 | sal.pc = address; |
3225 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3226 | sal.pspace = current_program_space; |
e62c965a | 3227 | |
51abb421 | 3228 | breakpoint *b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3229 | b->number = internal_breakpoint_number--; |
3230 | b->disposition = disp_donttouch; | |
3231 | ||
3232 | return b; | |
3233 | } | |
3234 | ||
17450429 PP |
3235 | static const char *const longjmp_names[] = |
3236 | { | |
3237 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3238 | }; | |
3239 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3240 | ||
3241 | /* Per-objfile data private to breakpoint.c. */ | |
3242 | struct breakpoint_objfile_data | |
3243 | { | |
3244 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
3b7344d5 | 3245 | struct bound_minimal_symbol overlay_msym; |
17450429 PP |
3246 | |
3247 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
3b7344d5 | 3248 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES]; |
17450429 | 3249 | |
28106bc2 SDJ |
3250 | /* True if we have looked for longjmp probes. */ |
3251 | int longjmp_searched; | |
3252 | ||
3253 | /* SystemTap probe points for longjmp (if any). */ | |
3254 | VEC (probe_p) *longjmp_probes; | |
3255 | ||
17450429 | 3256 | /* Minimal symbol for "std::terminate()" (if any). */ |
3b7344d5 | 3257 | struct bound_minimal_symbol terminate_msym; |
17450429 PP |
3258 | |
3259 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
3b7344d5 | 3260 | struct bound_minimal_symbol exception_msym; |
28106bc2 SDJ |
3261 | |
3262 | /* True if we have looked for exception probes. */ | |
3263 | int exception_searched; | |
3264 | ||
3265 | /* SystemTap probe points for unwinding (if any). */ | |
3266 | VEC (probe_p) *exception_probes; | |
17450429 PP |
3267 | }; |
3268 | ||
3269 | static const struct objfile_data *breakpoint_objfile_key; | |
3270 | ||
3271 | /* Minimal symbol not found sentinel. */ | |
3272 | static struct minimal_symbol msym_not_found; | |
3273 | ||
3274 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3275 | ||
3276 | static int | |
3277 | msym_not_found_p (const struct minimal_symbol *msym) | |
3278 | { | |
3279 | return msym == &msym_not_found; | |
3280 | } | |
3281 | ||
3282 | /* Return per-objfile data needed by breakpoint.c. | |
3283 | Allocate the data if necessary. */ | |
3284 | ||
3285 | static struct breakpoint_objfile_data * | |
3286 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3287 | { | |
3288 | struct breakpoint_objfile_data *bp_objfile_data; | |
3289 | ||
9a3c8263 SM |
3290 | bp_objfile_data = ((struct breakpoint_objfile_data *) |
3291 | objfile_data (objfile, breakpoint_objfile_key)); | |
17450429 PP |
3292 | if (bp_objfile_data == NULL) |
3293 | { | |
8d749320 SM |
3294 | bp_objfile_data = |
3295 | XOBNEW (&objfile->objfile_obstack, struct breakpoint_objfile_data); | |
17450429 PP |
3296 | |
3297 | memset (bp_objfile_data, 0, sizeof (*bp_objfile_data)); | |
3298 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); | |
3299 | } | |
3300 | return bp_objfile_data; | |
3301 | } | |
3302 | ||
28106bc2 SDJ |
3303 | static void |
3304 | free_breakpoint_probes (struct objfile *obj, void *data) | |
3305 | { | |
9a3c8263 SM |
3306 | struct breakpoint_objfile_data *bp_objfile_data |
3307 | = (struct breakpoint_objfile_data *) data; | |
28106bc2 SDJ |
3308 | |
3309 | VEC_free (probe_p, bp_objfile_data->longjmp_probes); | |
3310 | VEC_free (probe_p, bp_objfile_data->exception_probes); | |
3311 | } | |
3312 | ||
e62c965a | 3313 | static void |
af02033e | 3314 | create_overlay_event_breakpoint (void) |
e62c965a | 3315 | { |
69de3c6a | 3316 | struct objfile *objfile; |
af02033e | 3317 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3318 | |
69de3c6a PP |
3319 | ALL_OBJFILES (objfile) |
3320 | { | |
3321 | struct breakpoint *b; | |
17450429 PP |
3322 | struct breakpoint_objfile_data *bp_objfile_data; |
3323 | CORE_ADDR addr; | |
67994074 | 3324 | struct explicit_location explicit_loc; |
69de3c6a | 3325 | |
17450429 PP |
3326 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3327 | ||
3b7344d5 | 3328 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3329 | continue; |
3330 | ||
3b7344d5 | 3331 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3332 | { |
3b7344d5 | 3333 | struct bound_minimal_symbol m; |
17450429 PP |
3334 | |
3335 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3336 | if (m.minsym == NULL) |
17450429 PP |
3337 | { |
3338 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3339 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3340 | continue; |
3341 | } | |
3342 | bp_objfile_data->overlay_msym = m; | |
3343 | } | |
e62c965a | 3344 | |
77e371c0 | 3345 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
17450429 | 3346 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3347 | bp_overlay_event, |
3348 | &internal_breakpoint_ops); | |
67994074 KS |
3349 | initialize_explicit_location (&explicit_loc); |
3350 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3351 | b->location = new_explicit_location (&explicit_loc); |
e62c965a | 3352 | |
69de3c6a PP |
3353 | if (overlay_debugging == ovly_auto) |
3354 | { | |
3355 | b->enable_state = bp_enabled; | |
3356 | overlay_events_enabled = 1; | |
3357 | } | |
3358 | else | |
3359 | { | |
3360 | b->enable_state = bp_disabled; | |
3361 | overlay_events_enabled = 0; | |
3362 | } | |
e62c965a | 3363 | } |
e62c965a PP |
3364 | } |
3365 | ||
0fd8e87f | 3366 | static void |
af02033e | 3367 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3368 | { |
6c95b8df | 3369 | struct program_space *pspace; |
6c95b8df | 3370 | |
5ed8105e | 3371 | scoped_restore_current_program_space restore_pspace; |
0fd8e87f | 3372 | |
6c95b8df | 3373 | ALL_PSPACES (pspace) |
af02033e PP |
3374 | { |
3375 | struct objfile *objfile; | |
3376 | ||
3377 | set_current_program_space (pspace); | |
3378 | ||
3379 | ALL_OBJFILES (objfile) | |
0fd8e87f | 3380 | { |
af02033e PP |
3381 | int i; |
3382 | struct gdbarch *gdbarch; | |
17450429 | 3383 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 3384 | |
af02033e | 3385 | gdbarch = get_objfile_arch (objfile); |
0fd8e87f | 3386 | |
17450429 PP |
3387 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3388 | ||
28106bc2 SDJ |
3389 | if (!bp_objfile_data->longjmp_searched) |
3390 | { | |
25f9533e SDJ |
3391 | VEC (probe_p) *ret; |
3392 | ||
3393 | ret = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
3394 | if (ret != NULL) | |
3395 | { | |
3396 | /* We are only interested in checking one element. */ | |
3397 | struct probe *p = VEC_index (probe_p, ret, 0); | |
3398 | ||
3399 | if (!can_evaluate_probe_arguments (p)) | |
3400 | { | |
3401 | /* We cannot use the probe interface here, because it does | |
3402 | not know how to evaluate arguments. */ | |
3403 | VEC_free (probe_p, ret); | |
3404 | ret = NULL; | |
3405 | } | |
3406 | } | |
3407 | bp_objfile_data->longjmp_probes = ret; | |
28106bc2 SDJ |
3408 | bp_objfile_data->longjmp_searched = 1; |
3409 | } | |
3410 | ||
3411 | if (bp_objfile_data->longjmp_probes != NULL) | |
3412 | { | |
3413 | int i; | |
3414 | struct probe *probe; | |
3415 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3416 | ||
3417 | for (i = 0; | |
3418 | VEC_iterate (probe_p, | |
3419 | bp_objfile_data->longjmp_probes, | |
3420 | i, probe); | |
3421 | ++i) | |
3422 | { | |
3423 | struct breakpoint *b; | |
3424 | ||
729662a5 TT |
3425 | b = create_internal_breakpoint (gdbarch, |
3426 | get_probe_address (probe, | |
3427 | objfile), | |
28106bc2 SDJ |
3428 | bp_longjmp_master, |
3429 | &internal_breakpoint_ops); | |
d28cd78a | 3430 | b->location = new_probe_location ("-probe-stap libc:longjmp"); |
28106bc2 SDJ |
3431 | b->enable_state = bp_disabled; |
3432 | } | |
3433 | ||
3434 | continue; | |
3435 | } | |
3436 | ||
0569175e TSD |
3437 | if (!gdbarch_get_longjmp_target_p (gdbarch)) |
3438 | continue; | |
3439 | ||
17450429 | 3440 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
af02033e PP |
3441 | { |
3442 | struct breakpoint *b; | |
af02033e | 3443 | const char *func_name; |
17450429 | 3444 | CORE_ADDR addr; |
67994074 | 3445 | struct explicit_location explicit_loc; |
6c95b8df | 3446 | |
3b7344d5 | 3447 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) |
af02033e | 3448 | continue; |
0fd8e87f | 3449 | |
17450429 | 3450 | func_name = longjmp_names[i]; |
3b7344d5 | 3451 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) |
17450429 | 3452 | { |
3b7344d5 | 3453 | struct bound_minimal_symbol m; |
17450429 PP |
3454 | |
3455 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3456 | if (m.minsym == NULL) |
17450429 PP |
3457 | { |
3458 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3459 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; |
17450429 PP |
3460 | continue; |
3461 | } | |
3462 | bp_objfile_data->longjmp_msym[i] = m; | |
3463 | } | |
3464 | ||
77e371c0 | 3465 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); |
06edf0c0 PA |
3466 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, |
3467 | &internal_breakpoint_ops); | |
67994074 KS |
3468 | initialize_explicit_location (&explicit_loc); |
3469 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3470 | b->location = new_explicit_location (&explicit_loc); |
af02033e PP |
3471 | b->enable_state = bp_disabled; |
3472 | } | |
0fd8e87f | 3473 | } |
af02033e | 3474 | } |
0fd8e87f UW |
3475 | } |
3476 | ||
af02033e | 3477 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3478 | static void |
af02033e | 3479 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
3480 | { |
3481 | struct program_space *pspace; | |
af02033e | 3482 | const char *const func_name = "std::terminate()"; |
aa7d318d | 3483 | |
5ed8105e | 3484 | scoped_restore_current_program_space restore_pspace; |
aa7d318d TT |
3485 | |
3486 | ALL_PSPACES (pspace) | |
17450429 PP |
3487 | { |
3488 | struct objfile *objfile; | |
3489 | CORE_ADDR addr; | |
3490 | ||
3491 | set_current_program_space (pspace); | |
3492 | ||
aa7d318d TT |
3493 | ALL_OBJFILES (objfile) |
3494 | { | |
3495 | struct breakpoint *b; | |
17450429 | 3496 | struct breakpoint_objfile_data *bp_objfile_data; |
67994074 | 3497 | struct explicit_location explicit_loc; |
aa7d318d | 3498 | |
17450429 | 3499 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3500 | |
3b7344d5 | 3501 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
17450429 PP |
3502 | continue; |
3503 | ||
3b7344d5 | 3504 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
17450429 | 3505 | { |
3b7344d5 | 3506 | struct bound_minimal_symbol m; |
17450429 PP |
3507 | |
3508 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
3b7344d5 TT |
3509 | if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text |
3510 | && MSYMBOL_TYPE (m.minsym) != mst_file_text)) | |
17450429 PP |
3511 | { |
3512 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3513 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; |
17450429 PP |
3514 | continue; |
3515 | } | |
3516 | bp_objfile_data->terminate_msym = m; | |
3517 | } | |
aa7d318d | 3518 | |
77e371c0 | 3519 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
17450429 | 3520 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3521 | bp_std_terminate_master, |
3522 | &internal_breakpoint_ops); | |
67994074 KS |
3523 | initialize_explicit_location (&explicit_loc); |
3524 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3525 | b->location = new_explicit_location (&explicit_loc); |
aa7d318d TT |
3526 | b->enable_state = bp_disabled; |
3527 | } | |
17450429 | 3528 | } |
aa7d318d TT |
3529 | } |
3530 | ||
186c406b TT |
3531 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3532 | ||
70221824 | 3533 | static void |
186c406b TT |
3534 | create_exception_master_breakpoint (void) |
3535 | { | |
3536 | struct objfile *objfile; | |
17450429 | 3537 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
3538 | |
3539 | ALL_OBJFILES (objfile) | |
3540 | { | |
17450429 PP |
3541 | struct breakpoint *b; |
3542 | struct gdbarch *gdbarch; | |
3543 | struct breakpoint_objfile_data *bp_objfile_data; | |
3544 | CORE_ADDR addr; | |
67994074 | 3545 | struct explicit_location explicit_loc; |
17450429 PP |
3546 | |
3547 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3548 | ||
28106bc2 SDJ |
3549 | /* We prefer the SystemTap probe point if it exists. */ |
3550 | if (!bp_objfile_data->exception_searched) | |
3551 | { | |
25f9533e SDJ |
3552 | VEC (probe_p) *ret; |
3553 | ||
3554 | ret = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
3555 | ||
3556 | if (ret != NULL) | |
3557 | { | |
3558 | /* We are only interested in checking one element. */ | |
3559 | struct probe *p = VEC_index (probe_p, ret, 0); | |
3560 | ||
3561 | if (!can_evaluate_probe_arguments (p)) | |
3562 | { | |
3563 | /* We cannot use the probe interface here, because it does | |
3564 | not know how to evaluate arguments. */ | |
3565 | VEC_free (probe_p, ret); | |
3566 | ret = NULL; | |
3567 | } | |
3568 | } | |
3569 | bp_objfile_data->exception_probes = ret; | |
28106bc2 SDJ |
3570 | bp_objfile_data->exception_searched = 1; |
3571 | } | |
3572 | ||
3573 | if (bp_objfile_data->exception_probes != NULL) | |
3574 | { | |
3575 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3576 | int i; | |
3577 | struct probe *probe; | |
3578 | ||
3579 | for (i = 0; | |
3580 | VEC_iterate (probe_p, | |
3581 | bp_objfile_data->exception_probes, | |
3582 | i, probe); | |
3583 | ++i) | |
3584 | { | |
3585 | struct breakpoint *b; | |
3586 | ||
729662a5 TT |
3587 | b = create_internal_breakpoint (gdbarch, |
3588 | get_probe_address (probe, | |
3589 | objfile), | |
28106bc2 SDJ |
3590 | bp_exception_master, |
3591 | &internal_breakpoint_ops); | |
d28cd78a | 3592 | b->location = new_probe_location ("-probe-stap libgcc:unwind"); |
28106bc2 SDJ |
3593 | b->enable_state = bp_disabled; |
3594 | } | |
3595 | ||
3596 | continue; | |
3597 | } | |
3598 | ||
3599 | /* Otherwise, try the hook function. */ | |
3600 | ||
3b7344d5 | 3601 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
17450429 PP |
3602 | continue; |
3603 | ||
3604 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3605 | |
3b7344d5 | 3606 | if (bp_objfile_data->exception_msym.minsym == NULL) |
186c406b | 3607 | { |
3b7344d5 | 3608 | struct bound_minimal_symbol debug_hook; |
186c406b | 3609 | |
17450429 | 3610 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3b7344d5 | 3611 | if (debug_hook.minsym == NULL) |
17450429 | 3612 | { |
3b7344d5 | 3613 | bp_objfile_data->exception_msym.minsym = &msym_not_found; |
17450429 PP |
3614 | continue; |
3615 | } | |
3616 | ||
3617 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3618 | } |
17450429 | 3619 | |
77e371c0 | 3620 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); |
17450429 PP |
3621 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, |
3622 | ¤t_target); | |
06edf0c0 PA |
3623 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3624 | &internal_breakpoint_ops); | |
67994074 KS |
3625 | initialize_explicit_location (&explicit_loc); |
3626 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3627 | b->location = new_explicit_location (&explicit_loc); |
17450429 | 3628 | b->enable_state = bp_disabled; |
186c406b | 3629 | } |
186c406b TT |
3630 | } |
3631 | ||
9ef9e6a6 KS |
3632 | /* Does B have a location spec? */ |
3633 | ||
3634 | static int | |
3635 | breakpoint_event_location_empty_p (const struct breakpoint *b) | |
3636 | { | |
d28cd78a | 3637 | return b->location != NULL && event_location_empty_p (b->location.get ()); |
9ef9e6a6 KS |
3638 | } |
3639 | ||
c906108c | 3640 | void |
fba45db2 | 3641 | update_breakpoints_after_exec (void) |
c906108c | 3642 | { |
35df4500 | 3643 | struct breakpoint *b, *b_tmp; |
876fa593 | 3644 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3645 | |
25b22b0a PA |
3646 | /* We're about to delete breakpoints from GDB's lists. If the |
3647 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3648 | writing the breakpoints' "shadow contents" back into memory. The | |
3649 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3650 | do that. Instead, the target is responsible from marking | |
3651 | breakpoints out as soon as it detects an exec. We don't do that | |
3652 | here instead, because there may be other attempts to delete | |
3653 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3654 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3655 | if (bploc->pspace == current_program_space) |
3656 | gdb_assert (!bploc->inserted); | |
c906108c | 3657 | |
35df4500 | 3658 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3659 | { |
6c95b8df PA |
3660 | if (b->pspace != current_program_space) |
3661 | continue; | |
3662 | ||
4a64f543 | 3663 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3664 | if (b->type == bp_shlib_event) |
3665 | { | |
3666 | delete_breakpoint (b); | |
3667 | continue; | |
3668 | } | |
c906108c | 3669 | |
4a64f543 | 3670 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3671 | if (b->type == bp_jit_event) |
3672 | { | |
3673 | delete_breakpoint (b); | |
3674 | continue; | |
3675 | } | |
3676 | ||
1900040c | 3677 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3678 | as must overlay event and longjmp master breakpoints. */ |
3679 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3680 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3681 | || b->type == bp_exception_master) | |
c4093a6a JM |
3682 | { |
3683 | delete_breakpoint (b); | |
3684 | continue; | |
3685 | } | |
3686 | ||
4a64f543 | 3687 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3688 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3689 | { |
3690 | delete_breakpoint (b); | |
3691 | continue; | |
3692 | } | |
3693 | ||
7c16b83e PA |
3694 | /* Just like single-step breakpoints. */ |
3695 | if (b->type == bp_single_step) | |
3696 | { | |
3697 | delete_breakpoint (b); | |
3698 | continue; | |
3699 | } | |
3700 | ||
611c83ae PA |
3701 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3702 | after an exec. */ | |
186c406b | 3703 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3704 | || b->type == bp_longjmp_call_dummy |
186c406b | 3705 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3706 | { |
3707 | delete_breakpoint (b); | |
3708 | continue; | |
3709 | } | |
3710 | ||
ce78b96d JB |
3711 | if (b->type == bp_catchpoint) |
3712 | { | |
3713 | /* For now, none of the bp_catchpoint breakpoints need to | |
3714 | do anything at this point. In the future, if some of | |
3715 | the catchpoints need to something, we will need to add | |
3716 | a new method, and call this method from here. */ | |
3717 | continue; | |
3718 | } | |
3719 | ||
c5aa993b JM |
3720 | /* bp_finish is a special case. The only way we ought to be able |
3721 | to see one of these when an exec() has happened, is if the user | |
3722 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3723 | carries them to the call-site of the current callee, by setting | |
3724 | a temporary bp there and resuming. But in this case, the finish | |
3725 | will carry them entirely through the vfork & exec. | |
3726 | ||
3727 | We don't want to allow a bp_finish to remain inserted now. But | |
3728 | we can't safely delete it, 'cause finish_command has a handle to | |
3729 | the bp on a bpstat, and will later want to delete it. There's a | |
3730 | chance (and I've seen it happen) that if we delete the bp_finish | |
3731 | here, that its storage will get reused by the time finish_command | |
3732 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3733 | We really must allow finish_command to delete a bp_finish. | |
3734 | ||
e5dd4106 | 3735 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3736 | it's safe to delete something others may have handles to?" |
3737 | problem, what we'll do here is just uninsert the bp_finish, and | |
3738 | let finish_command delete it. | |
3739 | ||
3740 | (We know the bp_finish is "doomed" in the sense that it's | |
3741 | momentary, and will be deleted as soon as finish_command sees | |
3742 | the inferior stopped. So it doesn't matter that the bp's | |
3743 | address is probably bogus in the new a.out, unlike e.g., the | |
3744 | solib breakpoints.) */ | |
c5aa993b | 3745 | |
c5aa993b JM |
3746 | if (b->type == bp_finish) |
3747 | { | |
3748 | continue; | |
3749 | } | |
3750 | ||
3751 | /* Without a symbolic address, we have little hope of the | |
3752 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3753 | a.out. */ |
9ef9e6a6 | 3754 | if (breakpoint_event_location_empty_p (b)) |
c5aa993b JM |
3755 | { |
3756 | delete_breakpoint (b); | |
3757 | continue; | |
3758 | } | |
c5aa993b | 3759 | } |
c906108c SS |
3760 | } |
3761 | ||
3762 | int | |
d80ee84f | 3763 | detach_breakpoints (ptid_t ptid) |
c906108c | 3764 | { |
35df4500 | 3765 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3766 | int val = 0; |
2989a365 | 3767 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3768 | struct inferior *inf = current_inferior (); |
c5aa993b | 3769 | |
dfd4cc63 | 3770 | if (ptid_get_pid (ptid) == ptid_get_pid (inferior_ptid)) |
8a3fe4f8 | 3771 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3772 | |
6c95b8df | 3773 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3774 | inferior_ptid = ptid; |
35df4500 | 3775 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3776 | { |
35df4500 | 3777 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3778 | continue; |
3779 | ||
bd9673a4 PW |
3780 | /* This function must physically remove breakpoints locations |
3781 | from the specified ptid, without modifying the breakpoint | |
3782 | package's state. Locations of type bp_loc_other are only | |
3783 | maintained at GDB side. So, there is no need to remove | |
3784 | these bp_loc_other locations. Moreover, removing these | |
3785 | would modify the breakpoint package's state. */ | |
3786 | if (bl->loc_type == bp_loc_other) | |
3787 | continue; | |
3788 | ||
35df4500 | 3789 | if (bl->inserted) |
b2b6a7da | 3790 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); |
c5aa993b | 3791 | } |
d03285ec | 3792 | |
3a1bae8e | 3793 | return val; |
c906108c SS |
3794 | } |
3795 | ||
35df4500 | 3796 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3797 | Note that this is used to detach breakpoints from a child fork. |
3798 | When we get here, the child isn't in the inferior list, and neither | |
3799 | do we have objects to represent its address space --- we should | |
35df4500 | 3800 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3801 | |
c906108c | 3802 | static int |
b2b6a7da | 3803 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3804 | { |
3805 | int val; | |
c5aa993b | 3806 | |
35df4500 TJB |
3807 | /* BL is never in moribund_locations by our callers. */ |
3808 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3809 | |
74960c60 VP |
3810 | /* The type of none suggests that owner is actually deleted. |
3811 | This should not ever happen. */ | |
35df4500 | 3812 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3813 | |
35df4500 TJB |
3814 | if (bl->loc_type == bp_loc_software_breakpoint |
3815 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3816 | { |
c02f5703 MS |
3817 | /* "Normal" instruction breakpoint: either the standard |
3818 | trap-instruction bp (bp_breakpoint), or a | |
3819 | bp_hardware_breakpoint. */ | |
3820 | ||
3821 | /* First check to see if we have to handle an overlay. */ | |
3822 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3823 | || bl->section == NULL |
3824 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3825 | { |
3826 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3827 | |
3828 | /* If we're trying to uninsert a memory breakpoint that we | |
3829 | know is set in a dynamic object that is marked | |
3830 | shlib_disabled, then either the dynamic object was | |
3831 | removed with "remove-symbol-file" or with | |
3832 | "nosharedlibrary". In the former case, we don't know | |
3833 | whether another dynamic object might have loaded over the | |
3834 | breakpoint's address -- the user might well let us know | |
3835 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3836 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3837 | list of dynamically loaded objects). If we have the |
3838 | breakpoint's shadow memory, that is, this is a software | |
3839 | breakpoint managed by GDB, check whether the breakpoint | |
3840 | is still inserted in memory, to avoid overwriting wrong | |
3841 | code with stale saved shadow contents. Note that HW | |
3842 | breakpoints don't have shadow memory, as they're | |
3843 | implemented using a mechanism that is not dependent on | |
3844 | being able to modify the target's memory, and as such | |
3845 | they should always be removed. */ | |
3846 | if (bl->shlib_disabled | |
3847 | && bl->target_info.shadow_len != 0 | |
3848 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3849 | val = 0; | |
3850 | else | |
73971819 | 3851 | val = bl->owner->ops->remove_location (bl, reason); |
c02f5703 | 3852 | } |
c906108c SS |
3853 | else |
3854 | { | |
4a64f543 | 3855 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3856 | Did we set a breakpoint at the LMA? */ |
3857 | if (!overlay_events_enabled) | |
3858 | { | |
3859 | /* Yes -- overlay event support is not active, so we | |
3860 | should have set a breakpoint at the LMA. Remove it. | |
3861 | */ | |
c02f5703 MS |
3862 | /* Ignore any failures: if the LMA is in ROM, we will |
3863 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3864 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3865 | target_remove_hw_breakpoint (bl->gdbarch, | |
3866 | &bl->overlay_target_info); | |
c02f5703 | 3867 | else |
35df4500 | 3868 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3869 | &bl->overlay_target_info, |
3870 | reason); | |
c02f5703 MS |
3871 | } |
3872 | /* Did we set a breakpoint at the VMA? | |
3873 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3874 | if (bl->inserted) |
c906108c | 3875 | { |
c02f5703 MS |
3876 | /* Yes -- remove it. Previously we did not bother to |
3877 | remove the breakpoint if the section had been | |
3878 | unmapped, but let's not rely on that being safe. We | |
3879 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3880 | |
3881 | /* However, we should remove *software* breakpoints only | |
3882 | if the section is still mapped, or else we overwrite | |
3883 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3884 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3885 | || section_is_mapped (bl->section)) | |
73971819 | 3886 | val = bl->owner->ops->remove_location (bl, reason); |
aa67235e UW |
3887 | else |
3888 | val = 0; | |
c906108c | 3889 | } |
c02f5703 MS |
3890 | else |
3891 | { | |
3892 | /* No -- not inserted, so no need to remove. No error. */ | |
3893 | val = 0; | |
3894 | } | |
c906108c | 3895 | } |
879d1e6b | 3896 | |
08351840 PA |
3897 | /* In some cases, we might not be able to remove a breakpoint in |
3898 | a shared library that has already been removed, but we have | |
3899 | not yet processed the shlib unload event. Similarly for an | |
3900 | unloaded add-symbol-file object - the user might not yet have | |
3901 | had the chance to remove-symbol-file it. shlib_disabled will | |
3902 | be set if the library/object has already been removed, but | |
3903 | the breakpoint hasn't been uninserted yet, e.g., after | |
3904 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3905 | always-inserted mode. */ | |
076855f9 | 3906 | if (val |
08351840 PA |
3907 | && (bl->loc_type == bp_loc_software_breakpoint |
3908 | && (bl->shlib_disabled | |
3909 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3910 | || shared_objfile_contains_address_p (bl->pspace, |
3911 | bl->address)))) | |
879d1e6b UW |
3912 | val = 0; |
3913 | ||
c906108c SS |
3914 | if (val) |
3915 | return val; | |
b2b6a7da | 3916 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 3917 | } |
35df4500 | 3918 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3919 | { |
77b06cd7 TJB |
3920 | gdb_assert (bl->owner->ops != NULL |
3921 | && bl->owner->ops->remove_location != NULL); | |
3922 | ||
b2b6a7da | 3923 | bl->inserted = (reason == DETACH_BREAKPOINT); |
73971819 | 3924 | bl->owner->ops->remove_location (bl, reason); |
2e70b7b9 | 3925 | |
c906108c | 3926 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 3927 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 3928 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3929 | bl->owner->number); |
c906108c | 3930 | } |
35df4500 TJB |
3931 | else if (bl->owner->type == bp_catchpoint |
3932 | && breakpoint_enabled (bl->owner) | |
3933 | && !bl->duplicate) | |
ce78b96d | 3934 | { |
77b06cd7 TJB |
3935 | gdb_assert (bl->owner->ops != NULL |
3936 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3937 | |
73971819 | 3938 | val = bl->owner->ops->remove_location (bl, reason); |
ce78b96d JB |
3939 | if (val) |
3940 | return val; | |
77b06cd7 | 3941 | |
b2b6a7da | 3942 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 3943 | } |
c906108c SS |
3944 | |
3945 | return 0; | |
3946 | } | |
3947 | ||
6c95b8df | 3948 | static int |
834c0d03 | 3949 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 3950 | { |
35df4500 TJB |
3951 | /* BL is never in moribund_locations by our callers. */ |
3952 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3953 | |
6c95b8df PA |
3954 | /* The type of none suggests that owner is actually deleted. |
3955 | This should not ever happen. */ | |
35df4500 | 3956 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 3957 | |
5ed8105e | 3958 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3959 | |
35df4500 | 3960 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3961 | |
5ed8105e | 3962 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
3963 | } |
3964 | ||
c906108c SS |
3965 | /* Clear the "inserted" flag in all breakpoints. */ |
3966 | ||
25b22b0a | 3967 | void |
fba45db2 | 3968 | mark_breakpoints_out (void) |
c906108c | 3969 | { |
35df4500 | 3970 | struct bp_location *bl, **blp_tmp; |
c906108c | 3971 | |
35df4500 | 3972 | ALL_BP_LOCATIONS (bl, blp_tmp) |
66c4b3e8 | 3973 | if (bl->pspace == current_program_space) |
35df4500 | 3974 | bl->inserted = 0; |
c906108c SS |
3975 | } |
3976 | ||
53a5351d JM |
3977 | /* Clear the "inserted" flag in all breakpoints and delete any |
3978 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3979 | |
3980 | Plus other such housekeeping that has to be done for breakpoints | |
3981 | between runs. | |
3982 | ||
53a5351d JM |
3983 | Note: this function gets called at the end of a run (by |
3984 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3985 | init_wait_for_inferior). */ |
c906108c SS |
3986 | |
3987 | ||
3988 | ||
3989 | void | |
fba45db2 | 3990 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3991 | { |
35df4500 | 3992 | struct breakpoint *b, *b_tmp; |
870f88f7 | 3993 | struct bp_location *bl; |
1c5cfe86 | 3994 | int ix; |
6c95b8df | 3995 | struct program_space *pspace = current_program_space; |
c906108c | 3996 | |
50c71eaf PA |
3997 | /* If breakpoint locations are shared across processes, then there's |
3998 | nothing to do. */ | |
f5656ead | 3999 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
4000 | return; |
4001 | ||
1a853c52 | 4002 | mark_breakpoints_out (); |
075f6582 | 4003 | |
35df4500 | 4004 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 4005 | { |
6c95b8df PA |
4006 | if (b->loc && b->loc->pspace != pspace) |
4007 | continue; | |
4008 | ||
c5aa993b JM |
4009 | switch (b->type) |
4010 | { | |
4011 | case bp_call_dummy: | |
e2e4d78b | 4012 | case bp_longjmp_call_dummy: |
c906108c | 4013 | |
c5aa993b | 4014 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
4015 | cause problems when the inferior is rerun, so we better get |
4016 | rid of it. */ | |
4017 | ||
4018 | case bp_watchpoint_scope: | |
4019 | ||
4020 | /* Also get rid of scope breakpoints. */ | |
4021 | ||
4022 | case bp_shlib_event: | |
4023 | ||
4024 | /* Also remove solib event breakpoints. Their addresses may | |
4025 | have changed since the last time we ran the program. | |
4026 | Actually we may now be debugging against different target; | |
4027 | and so the solib backend that installed this breakpoint may | |
4028 | not be used in by the target. E.g., | |
4029 | ||
4030 | (gdb) file prog-linux | |
4031 | (gdb) run # native linux target | |
4032 | ... | |
4033 | (gdb) kill | |
4034 | (gdb) file prog-win.exe | |
4035 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
4036 | */ | |
c906108c | 4037 | |
f59f708a PA |
4038 | case bp_step_resume: |
4039 | ||
4040 | /* Also remove step-resume breakpoints. */ | |
4041 | ||
7c16b83e PA |
4042 | case bp_single_step: |
4043 | ||
4044 | /* Also remove single-step breakpoints. */ | |
4045 | ||
c5aa993b JM |
4046 | delete_breakpoint (b); |
4047 | break; | |
c906108c | 4048 | |
c5aa993b JM |
4049 | case bp_watchpoint: |
4050 | case bp_hardware_watchpoint: | |
4051 | case bp_read_watchpoint: | |
4052 | case bp_access_watchpoint: | |
3a5c3e22 PA |
4053 | { |
4054 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 4055 | |
3a5c3e22 PA |
4056 | /* Likewise for watchpoints on local expressions. */ |
4057 | if (w->exp_valid_block != NULL) | |
4058 | delete_breakpoint (b); | |
63000888 | 4059 | else |
3a5c3e22 | 4060 | { |
63000888 PA |
4061 | /* Get rid of existing locations, which are no longer |
4062 | valid. New ones will be created in | |
4063 | update_watchpoint, when the inferior is restarted. | |
4064 | The next update_global_location_list call will | |
4065 | garbage collect them. */ | |
4066 | b->loc = NULL; | |
4067 | ||
4068 | if (context == inf_starting) | |
4069 | { | |
4070 | /* Reset val field to force reread of starting value in | |
4071 | insert_breakpoints. */ | |
4072 | if (w->val) | |
4073 | value_free (w->val); | |
4074 | w->val = NULL; | |
4075 | w->val_valid = 0; | |
4076 | } | |
4077 | } | |
3a5c3e22 | 4078 | } |
c5aa993b JM |
4079 | break; |
4080 | default: | |
c5aa993b JM |
4081 | break; |
4082 | } | |
4083 | } | |
1c5cfe86 PA |
4084 | |
4085 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
4086 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
4087 | decref_bp_location (&bl); | |
1c5cfe86 | 4088 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
4089 | } |
4090 | ||
6c95b8df PA |
4091 | /* These functions concern about actual breakpoints inserted in the |
4092 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
4093 | we need to hop over the bkpt --- so we check for address space | |
4094 | match, not program space. */ | |
4095 | ||
c2c6d25f JM |
4096 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
4097 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
4098 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
4099 | permanent breakpoint. | |
4100 | - When continuing from a location with an ordinary breakpoint, we | |
4101 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 4102 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
4103 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
4104 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 4105 | |
c2c6d25f | 4106 | enum breakpoint_here |
6c95b8df | 4107 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 4108 | { |
35df4500 | 4109 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 4110 | int any_breakpoint_here = 0; |
c906108c | 4111 | |
35df4500 | 4112 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 4113 | { |
35df4500 TJB |
4114 | if (bl->loc_type != bp_loc_software_breakpoint |
4115 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4116 | continue; |
4117 | ||
f1310107 | 4118 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 4119 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 4120 | || bl->permanent) |
f1310107 | 4121 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
4122 | { |
4123 | if (overlay_debugging | |
35df4500 TJB |
4124 | && section_is_overlay (bl->section) |
4125 | && !section_is_mapped (bl->section)) | |
075f6582 | 4126 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 4127 | else if (bl->permanent) |
075f6582 DJ |
4128 | return permanent_breakpoint_here; |
4129 | else | |
4130 | any_breakpoint_here = 1; | |
4131 | } | |
4132 | } | |
c906108c | 4133 | |
f486487f | 4134 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
4135 | } |
4136 | ||
d35ae833 PA |
4137 | /* See breakpoint.h. */ |
4138 | ||
4139 | int | |
4140 | breakpoint_in_range_p (struct address_space *aspace, | |
4141 | CORE_ADDR addr, ULONGEST len) | |
4142 | { | |
4143 | struct bp_location *bl, **blp_tmp; | |
4144 | ||
4145 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
4146 | { | |
4147 | if (bl->loc_type != bp_loc_software_breakpoint | |
4148 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
4149 | continue; | |
4150 | ||
4151 | if ((breakpoint_enabled (bl->owner) | |
4152 | || bl->permanent) | |
4153 | && breakpoint_location_address_range_overlap (bl, aspace, | |
4154 | addr, len)) | |
4155 | { | |
4156 | if (overlay_debugging | |
4157 | && section_is_overlay (bl->section) | |
4158 | && !section_is_mapped (bl->section)) | |
4159 | { | |
4160 | /* Unmapped overlay -- can't be a match. */ | |
4161 | continue; | |
4162 | } | |
4163 | ||
4164 | return 1; | |
4165 | } | |
4166 | } | |
4167 | ||
4168 | return 0; | |
4169 | } | |
4170 | ||
1c5cfe86 PA |
4171 | /* Return true if there's a moribund breakpoint at PC. */ |
4172 | ||
4173 | int | |
6c95b8df | 4174 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
4175 | { |
4176 | struct bp_location *loc; | |
4177 | int ix; | |
4178 | ||
4179 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 4180 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4181 | return 1; |
4182 | ||
4183 | return 0; | |
4184 | } | |
c2c6d25f | 4185 | |
f7ce857f PA |
4186 | /* Returns non-zero iff BL is inserted at PC, in address space |
4187 | ASPACE. */ | |
4188 | ||
4189 | static int | |
4190 | bp_location_inserted_here_p (struct bp_location *bl, | |
4191 | struct address_space *aspace, CORE_ADDR pc) | |
4192 | { | |
4193 | if (bl->inserted | |
4194 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4195 | aspace, pc)) | |
4196 | { | |
4197 | if (overlay_debugging | |
4198 | && section_is_overlay (bl->section) | |
4199 | && !section_is_mapped (bl->section)) | |
4200 | return 0; /* unmapped overlay -- can't be a match */ | |
4201 | else | |
4202 | return 1; | |
4203 | } | |
4204 | return 0; | |
4205 | } | |
4206 | ||
a1fd2fa5 | 4207 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4208 | |
4209 | int | |
a1fd2fa5 | 4210 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 4211 | { |
f7ce857f | 4212 | struct bp_location **blp, **blp_tmp = NULL; |
c906108c | 4213 | |
f7ce857f | 4214 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
c5aa993b | 4215 | { |
f7ce857f PA |
4216 | struct bp_location *bl = *blp; |
4217 | ||
35df4500 TJB |
4218 | if (bl->loc_type != bp_loc_software_breakpoint |
4219 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4220 | continue; |
4221 | ||
f7ce857f PA |
4222 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4223 | return 1; | |
c5aa993b | 4224 | } |
c36b740a VP |
4225 | return 0; |
4226 | } | |
4227 | ||
a1fd2fa5 PA |
4228 | /* This function returns non-zero iff there is a software breakpoint |
4229 | inserted at PC. */ | |
c36b740a VP |
4230 | |
4231 | int | |
a1fd2fa5 PA |
4232 | software_breakpoint_inserted_here_p (struct address_space *aspace, |
4233 | CORE_ADDR pc) | |
4fa8626c | 4234 | { |
f7ce857f | 4235 | struct bp_location **blp, **blp_tmp = NULL; |
4fa8626c | 4236 | |
f7ce857f | 4237 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
4fa8626c | 4238 | { |
f7ce857f PA |
4239 | struct bp_location *bl = *blp; |
4240 | ||
35df4500 | 4241 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4242 | continue; |
4243 | ||
f7ce857f PA |
4244 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4245 | return 1; | |
4fa8626c DJ |
4246 | } |
4247 | ||
4248 | return 0; | |
9c02b525 PA |
4249 | } |
4250 | ||
4251 | /* See breakpoint.h. */ | |
4252 | ||
4253 | int | |
4254 | hardware_breakpoint_inserted_here_p (struct address_space *aspace, | |
4255 | CORE_ADDR pc) | |
4256 | { | |
4257 | struct bp_location **blp, **blp_tmp = NULL; | |
9c02b525 PA |
4258 | |
4259 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) | |
4260 | { | |
4261 | struct bp_location *bl = *blp; | |
4262 | ||
4263 | if (bl->loc_type != bp_loc_hardware_breakpoint) | |
4264 | continue; | |
4265 | ||
4266 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4267 | return 1; | |
4268 | } | |
4269 | ||
4270 | return 0; | |
4fa8626c DJ |
4271 | } |
4272 | ||
9093389c PA |
4273 | int |
4274 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
4275 | CORE_ADDR addr, ULONGEST len) | |
4276 | { | |
4277 | struct breakpoint *bpt; | |
4278 | ||
4279 | ALL_BREAKPOINTS (bpt) | |
4280 | { | |
4281 | struct bp_location *loc; | |
4282 | ||
4283 | if (bpt->type != bp_hardware_watchpoint | |
4284 | && bpt->type != bp_access_watchpoint) | |
4285 | continue; | |
4286 | ||
4287 | if (!breakpoint_enabled (bpt)) | |
4288 | continue; | |
4289 | ||
4290 | for (loc = bpt->loc; loc; loc = loc->next) | |
4291 | if (loc->pspace->aspace == aspace && loc->inserted) | |
4292 | { | |
4293 | CORE_ADDR l, h; | |
4294 | ||
4295 | /* Check for intersection. */ | |
768adc05 PA |
4296 | l = std::max<CORE_ADDR> (loc->address, addr); |
4297 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4298 | if (l < h) |
4299 | return 1; | |
4300 | } | |
4301 | } | |
4302 | return 0; | |
4303 | } | |
c906108c | 4304 | \f |
c5aa993b | 4305 | |
c906108c SS |
4306 | /* bpstat stuff. External routines' interfaces are documented |
4307 | in breakpoint.h. */ | |
4308 | ||
4309 | int | |
c326b90e | 4310 | is_catchpoint (struct breakpoint *ep) |
c906108c | 4311 | { |
533be4dd | 4312 | return (ep->type == bp_catchpoint); |
c906108c SS |
4313 | } |
4314 | ||
f431efe5 PA |
4315 | /* Frees any storage that is part of a bpstat. Does not walk the |
4316 | 'next' chain. */ | |
4317 | ||
04afa70c | 4318 | bpstats::~bpstats () |
198757a8 | 4319 | { |
04afa70c TT |
4320 | if (old_val != NULL) |
4321 | value_free (old_val); | |
04afa70c TT |
4322 | if (bp_location_at != NULL) |
4323 | decref_bp_location (&bp_location_at); | |
198757a8 VP |
4324 | } |
4325 | ||
c906108c SS |
4326 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4327 | Also free any storage that is part of a bpstat. */ | |
4328 | ||
4329 | void | |
fba45db2 | 4330 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4331 | { |
4332 | bpstat p; | |
4333 | bpstat q; | |
4334 | ||
4335 | if (bsp == 0) | |
4336 | return; | |
4337 | p = *bsp; | |
4338 | while (p != NULL) | |
4339 | { | |
4340 | q = p->next; | |
04afa70c | 4341 | delete p; |
c906108c SS |
4342 | p = q; |
4343 | } | |
4344 | *bsp = NULL; | |
4345 | } | |
4346 | ||
04afa70c TT |
4347 | bpstats::bpstats (const bpstats &other) |
4348 | : next (NULL), | |
4349 | bp_location_at (other.bp_location_at), | |
4350 | breakpoint_at (other.breakpoint_at), | |
4351 | commands (other.commands), | |
4352 | old_val (other.old_val), | |
4353 | print (other.print), | |
4354 | stop (other.stop), | |
4355 | print_it (other.print_it) | |
4356 | { | |
4357 | if (old_val != NULL) | |
4358 | { | |
4359 | old_val = value_copy (old_val); | |
4360 | release_value (old_val); | |
4361 | } | |
4362 | incref_bp_location (bp_location_at); | |
04afa70c TT |
4363 | } |
4364 | ||
c906108c SS |
4365 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4366 | is part of the bpstat is copied as well. */ | |
4367 | ||
4368 | bpstat | |
fba45db2 | 4369 | bpstat_copy (bpstat bs) |
c906108c SS |
4370 | { |
4371 | bpstat p = NULL; | |
4372 | bpstat tmp; | |
4373 | bpstat retval = NULL; | |
4374 | ||
4375 | if (bs == NULL) | |
4376 | return bs; | |
4377 | ||
4378 | for (; bs != NULL; bs = bs->next) | |
4379 | { | |
04afa70c | 4380 | tmp = new bpstats (*bs); |
31cc81e9 | 4381 | |
c906108c SS |
4382 | if (p == NULL) |
4383 | /* This is the first thing in the chain. */ | |
4384 | retval = tmp; | |
4385 | else | |
4386 | p->next = tmp; | |
4387 | p = tmp; | |
4388 | } | |
4389 | p->next = NULL; | |
4390 | return retval; | |
4391 | } | |
4392 | ||
4a64f543 | 4393 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4394 | |
4395 | bpstat | |
fba45db2 | 4396 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4397 | { |
c5aa993b JM |
4398 | if (bsp == NULL) |
4399 | return NULL; | |
c906108c | 4400 | |
c5aa993b JM |
4401 | for (; bsp != NULL; bsp = bsp->next) |
4402 | { | |
f431efe5 | 4403 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4404 | return bsp; |
4405 | } | |
c906108c SS |
4406 | return NULL; |
4407 | } | |
4408 | ||
ab04a2af TT |
4409 | /* See breakpoint.h. */ |
4410 | ||
47591c29 | 4411 | int |
427cd150 | 4412 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4413 | { |
ab04a2af TT |
4414 | for (; bsp != NULL; bsp = bsp->next) |
4415 | { | |
427cd150 TT |
4416 | if (bsp->breakpoint_at == NULL) |
4417 | { | |
4418 | /* A moribund location can never explain a signal other than | |
4419 | GDB_SIGNAL_TRAP. */ | |
4420 | if (sig == GDB_SIGNAL_TRAP) | |
47591c29 | 4421 | return 1; |
427cd150 TT |
4422 | } |
4423 | else | |
47591c29 PA |
4424 | { |
4425 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4426 | sig)) | |
4427 | return 1; | |
4428 | } | |
ab04a2af TT |
4429 | } |
4430 | ||
47591c29 | 4431 | return 0; |
ab04a2af TT |
4432 | } |
4433 | ||
4a64f543 MS |
4434 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4435 | stopped at. *BSP upon return is a bpstat which points to the | |
4436 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4437 | good for anything but further calls to bpstat_num). | |
4438 | ||
8671a17b PA |
4439 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4440 | Return -1 if stopped at a breakpoint that has been deleted since | |
4441 | we set it. | |
4442 | Return 1 otherwise. */ | |
c906108c SS |
4443 | |
4444 | int | |
8671a17b | 4445 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4446 | { |
4447 | struct breakpoint *b; | |
4448 | ||
4449 | if ((*bsp) == NULL) | |
4450 | return 0; /* No more breakpoint values */ | |
8671a17b | 4451 | |
4a64f543 MS |
4452 | /* We assume we'll never have several bpstats that correspond to a |
4453 | single breakpoint -- otherwise, this function might return the | |
4454 | same number more than once and this will look ugly. */ | |
f431efe5 | 4455 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4456 | *bsp = (*bsp)->next; |
4457 | if (b == NULL) | |
4458 | return -1; /* breakpoint that's been deleted since */ | |
4459 | ||
4460 | *num = b->number; /* We have its number */ | |
4461 | return 1; | |
c906108c SS |
4462 | } |
4463 | ||
e93ca019 | 4464 | /* See breakpoint.h. */ |
c906108c SS |
4465 | |
4466 | void | |
e93ca019 | 4467 | bpstat_clear_actions (void) |
c906108c | 4468 | { |
e93ca019 JK |
4469 | struct thread_info *tp; |
4470 | bpstat bs; | |
4471 | ||
4472 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4473 | return; | |
4474 | ||
4475 | tp = find_thread_ptid (inferior_ptid); | |
4476 | if (tp == NULL) | |
4477 | return; | |
4478 | ||
4479 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) | |
c906108c | 4480 | { |
d1b0a7bf | 4481 | bs->commands = NULL; |
abf85f46 | 4482 | |
c906108c SS |
4483 | if (bs->old_val != NULL) |
4484 | { | |
4485 | value_free (bs->old_val); | |
4486 | bs->old_val = NULL; | |
4487 | } | |
4488 | } | |
4489 | } | |
4490 | ||
f3b1572e PA |
4491 | /* Called when a command is about to proceed the inferior. */ |
4492 | ||
4493 | static void | |
4494 | breakpoint_about_to_proceed (void) | |
4495 | { | |
4496 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
4497 | { | |
4498 | struct thread_info *tp = inferior_thread (); | |
4499 | ||
4500 | /* Allow inferior function calls in breakpoint commands to not | |
4501 | interrupt the command list. When the call finishes | |
4502 | successfully, the inferior will be standing at the same | |
4503 | breakpoint as if nothing happened. */ | |
16c381f0 | 4504 | if (tp->control.in_infcall) |
f3b1572e PA |
4505 | return; |
4506 | } | |
4507 | ||
4508 | breakpoint_proceeded = 1; | |
4509 | } | |
4510 | ||
4a64f543 MS |
4511 | /* Stub for cleaning up our state if we error-out of a breakpoint |
4512 | command. */ | |
c906108c | 4513 | static void |
4efb68b1 | 4514 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
4515 | { |
4516 | executing_breakpoint_commands = 0; | |
4517 | } | |
4518 | ||
abf85f46 JK |
4519 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4520 | or its equivalent. */ | |
4521 | ||
4522 | static int | |
4523 | command_line_is_silent (struct command_line *cmd) | |
4524 | { | |
4f45d445 | 4525 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4526 | } |
4527 | ||
4a64f543 MS |
4528 | /* Execute all the commands associated with all the breakpoints at |
4529 | this location. Any of these commands could cause the process to | |
4530 | proceed beyond this point, etc. We look out for such changes by | |
4531 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4532 | |
347bddb7 PA |
4533 | Returns true if a breakpoint command resumed the inferior. In that |
4534 | case, it is the caller's responsibility to recall it again with the | |
4535 | bpstat of the current thread. */ | |
4536 | ||
4537 | static int | |
4538 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4539 | { |
4540 | bpstat bs; | |
4541 | struct cleanup *old_chain; | |
347bddb7 | 4542 | int again = 0; |
c906108c SS |
4543 | |
4544 | /* Avoid endless recursion if a `source' command is contained | |
4545 | in bs->commands. */ | |
4546 | if (executing_breakpoint_commands) | |
347bddb7 | 4547 | return 0; |
c906108c SS |
4548 | |
4549 | executing_breakpoint_commands = 1; | |
4550 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
4551 | ||
1ac32117 | 4552 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4553 | |
4a64f543 | 4554 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4555 | bs = *bsp; |
4556 | ||
4557 | breakpoint_proceeded = 0; | |
4558 | for (; bs != NULL; bs = bs->next) | |
4559 | { | |
d1b0a7bf | 4560 | struct command_line *cmd = NULL; |
6c50ab1c JB |
4561 | |
4562 | /* Take ownership of the BSP's command tree, if it has one. | |
4563 | ||
4564 | The command tree could legitimately contain commands like | |
4565 | 'step' and 'next', which call clear_proceed_status, which | |
4566 | frees stop_bpstat's command tree. To make sure this doesn't | |
4567 | free the tree we're executing out from under us, we need to | |
4568 | take ownership of the tree ourselves. Since a given bpstat's | |
4569 | commands are only executed once, we don't need to copy it; we | |
4570 | can clear the pointer in the bpstat, and make sure we free | |
4571 | the tree when we're done. */ | |
d1b0a7bf | 4572 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4573 | bs->commands = NULL; |
d1b0a7bf TT |
4574 | if (ccmd != NULL) |
4575 | cmd = ccmd.get (); | |
abf85f46 JK |
4576 | if (command_line_is_silent (cmd)) |
4577 | { | |
4578 | /* The action has been already done by bpstat_stop_status. */ | |
4579 | cmd = cmd->next; | |
4580 | } | |
6c50ab1c | 4581 | |
c906108c SS |
4582 | while (cmd != NULL) |
4583 | { | |
4584 | execute_control_command (cmd); | |
4585 | ||
4586 | if (breakpoint_proceeded) | |
4587 | break; | |
4588 | else | |
4589 | cmd = cmd->next; | |
4590 | } | |
6c50ab1c | 4591 | |
c906108c | 4592 | if (breakpoint_proceeded) |
32c1e744 | 4593 | { |
cb814510 | 4594 | if (current_ui->async) |
347bddb7 PA |
4595 | /* If we are in async mode, then the target might be still |
4596 | running, not stopped at any breakpoint, so nothing for | |
4597 | us to do here -- just return to the event loop. */ | |
4598 | ; | |
32c1e744 VP |
4599 | else |
4600 | /* In sync mode, when execute_control_command returns | |
4601 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4602 | Breakpoint commands for that stop were not run, since |
4603 | execute_command does not run breakpoint commands -- | |
4604 | only command_line_handler does, but that one is not | |
4605 | involved in execution of breakpoint commands. So, we | |
4606 | can now execute breakpoint commands. It should be | |
4607 | noted that making execute_command do bpstat actions is | |
4608 | not an option -- in this case we'll have recursive | |
4609 | invocation of bpstat for each breakpoint with a | |
4610 | command, and can easily blow up GDB stack. Instead, we | |
4611 | return true, which will trigger the caller to recall us | |
4612 | with the new stop_bpstat. */ | |
4613 | again = 1; | |
4614 | break; | |
32c1e744 | 4615 | } |
c906108c | 4616 | } |
c2b8ed2c | 4617 | do_cleanups (old_chain); |
347bddb7 PA |
4618 | return again; |
4619 | } | |
4620 | ||
4621 | void | |
4622 | bpstat_do_actions (void) | |
4623 | { | |
353d1d73 JK |
4624 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
4625 | ||
347bddb7 PA |
4626 | /* Do any commands attached to breakpoint we are stopped at. */ |
4627 | while (!ptid_equal (inferior_ptid, null_ptid) | |
4628 | && target_has_execution | |
4629 | && !is_exited (inferior_ptid) | |
4630 | && !is_executing (inferior_ptid)) | |
4631 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
4632 | and only return when it is stopped at the next breakpoint, we | |
4633 | keep doing breakpoint actions until it returns false to | |
4634 | indicate the inferior was not resumed. */ | |
16c381f0 | 4635 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 4636 | break; |
353d1d73 JK |
4637 | |
4638 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
4639 | } |
4640 | ||
fa4727a6 DJ |
4641 | /* Print out the (old or new) value associated with a watchpoint. */ |
4642 | ||
4643 | static void | |
4644 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4645 | { | |
4646 | if (val == NULL) | |
4647 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4648 | else | |
79a45b7d TT |
4649 | { |
4650 | struct value_print_options opts; | |
4651 | get_user_print_options (&opts); | |
4652 | value_print (val, stream, &opts); | |
4653 | } | |
fa4727a6 DJ |
4654 | } |
4655 | ||
f303dbd6 PA |
4656 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4657 | debugging multiple threads. */ | |
4658 | ||
4659 | void | |
4660 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4661 | { | |
112e8700 | 4662 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4663 | return; |
4664 | ||
112e8700 | 4665 | uiout->text ("\n"); |
f303dbd6 PA |
4666 | |
4667 | if (show_thread_that_caused_stop ()) | |
4668 | { | |
4669 | const char *name; | |
4670 | struct thread_info *thr = inferior_thread (); | |
4671 | ||
112e8700 SM |
4672 | uiout->text ("Thread "); |
4673 | uiout->field_fmt ("thread-id", "%s", print_thread_id (thr)); | |
f303dbd6 PA |
4674 | |
4675 | name = thr->name != NULL ? thr->name : target_thread_name (thr); | |
4676 | if (name != NULL) | |
4677 | { | |
112e8700 SM |
4678 | uiout->text (" \""); |
4679 | uiout->field_fmt ("name", "%s", name); | |
4680 | uiout->text ("\""); | |
f303dbd6 PA |
4681 | } |
4682 | ||
112e8700 | 4683 | uiout->text (" hit "); |
f303dbd6 PA |
4684 | } |
4685 | } | |
4686 | ||
e514a9d6 | 4687 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4688 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4689 | 'print_it' in the bpstat structure. Under some circumstances we |
4690 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4691 | normal_stop(). */ |
e514a9d6 JM |
4692 | |
4693 | static enum print_stop_action | |
4694 | print_bp_stop_message (bpstat bs) | |
4695 | { | |
4696 | switch (bs->print_it) | |
4697 | { | |
4698 | case print_it_noop: | |
4a64f543 | 4699 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4700 | return PRINT_UNKNOWN; |
4701 | break; | |
4702 | ||
4703 | case print_it_done: | |
4704 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4705 | relevant messages. */ |
e514a9d6 JM |
4706 | return PRINT_SRC_AND_LOC; |
4707 | break; | |
4708 | ||
4709 | case print_it_normal: | |
4f8d1dc6 | 4710 | { |
f431efe5 PA |
4711 | struct breakpoint *b = bs->breakpoint_at; |
4712 | ||
1a6a67de TJB |
4713 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4714 | which has since been deleted. */ | |
4715 | if (b == NULL) | |
4716 | return PRINT_UNKNOWN; | |
4717 | ||
348d480f PA |
4718 | /* Normal case. Call the breakpoint's print_it method. */ |
4719 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4720 | } |
348d480f | 4721 | break; |
3086aeae | 4722 | |
e514a9d6 | 4723 | default: |
8e65ff28 | 4724 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4725 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4726 | break; |
c906108c | 4727 | } |
c906108c SS |
4728 | } |
4729 | ||
edcc5120 TT |
4730 | /* A helper function that prints a shared library stopped event. */ |
4731 | ||
4732 | static void | |
4733 | print_solib_event (int is_catchpoint) | |
4734 | { | |
4735 | int any_deleted | |
4736 | = !VEC_empty (char_ptr, current_program_space->deleted_solibs); | |
4737 | int any_added | |
4738 | = !VEC_empty (so_list_ptr, current_program_space->added_solibs); | |
4739 | ||
4740 | if (!is_catchpoint) | |
4741 | { | |
4742 | if (any_added || any_deleted) | |
112e8700 | 4743 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4744 | else |
112e8700 SM |
4745 | current_uiout->text (_("Stopped due to shared library event (no " |
4746 | "libraries added or removed)\n")); | |
edcc5120 TT |
4747 | } |
4748 | ||
112e8700 SM |
4749 | if (current_uiout->is_mi_like_p ()) |
4750 | current_uiout->field_string ("reason", | |
4751 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4752 | |
4753 | if (any_deleted) | |
4754 | { | |
edcc5120 TT |
4755 | char *name; |
4756 | int ix; | |
4757 | ||
112e8700 | 4758 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4759 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
edcc5120 TT |
4760 | for (ix = 0; |
4761 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
4762 | ix, name); | |
4763 | ++ix) | |
4764 | { | |
4765 | if (ix > 0) | |
112e8700 SM |
4766 | current_uiout->text (" "); |
4767 | current_uiout->field_string ("library", name); | |
4768 | current_uiout->text ("\n"); | |
edcc5120 | 4769 | } |
edcc5120 TT |
4770 | } |
4771 | ||
4772 | if (any_added) | |
4773 | { | |
4774 | struct so_list *iter; | |
4775 | int ix; | |
edcc5120 | 4776 | |
112e8700 | 4777 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4778 | ui_out_emit_list list_emitter (current_uiout, "added"); |
edcc5120 TT |
4779 | for (ix = 0; |
4780 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
4781 | ix, iter); | |
4782 | ++ix) | |
4783 | { | |
4784 | if (ix > 0) | |
112e8700 SM |
4785 | current_uiout->text (" "); |
4786 | current_uiout->field_string ("library", iter->so_name); | |
4787 | current_uiout->text ("\n"); | |
edcc5120 | 4788 | } |
edcc5120 TT |
4789 | } |
4790 | } | |
4791 | ||
e514a9d6 JM |
4792 | /* Print a message indicating what happened. This is called from |
4793 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4794 | list - a list of the eventpoints that caused this stop. KIND is |
4795 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4796 | routine calls the generic print routine for printing a message |
4797 | about reasons for stopping. This will print (for example) the | |
4798 | "Breakpoint n," part of the output. The return value of this | |
4799 | routine is one of: | |
c906108c | 4800 | |
4a64f543 | 4801 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4802 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4803 | code to print the location. An example is |
c5aa993b JM |
4804 | "Breakpoint 1, " which should be followed by |
4805 | the location. | |
917317f4 | 4806 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4807 | to also print the location part of the message. |
4808 | An example is the catch/throw messages, which | |
4a64f543 | 4809 | don't require a location appended to the end. |
917317f4 | 4810 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4811 | further info to be printed. */ |
c906108c | 4812 | |
917317f4 | 4813 | enum print_stop_action |
36dfb11c | 4814 | bpstat_print (bpstat bs, int kind) |
c906108c | 4815 | { |
f486487f | 4816 | enum print_stop_action val; |
c5aa993b | 4817 | |
c906108c | 4818 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4819 | (Currently all watchpoints go on the bpstat whether hit or not. |
4820 | That probably could (should) be changed, provided care is taken | |
c906108c | 4821 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4822 | for (; bs; bs = bs->next) |
4823 | { | |
4824 | val = print_bp_stop_message (bs); | |
4825 | if (val == PRINT_SRC_ONLY | |
4826 | || val == PRINT_SRC_AND_LOC | |
4827 | || val == PRINT_NOTHING) | |
4828 | return val; | |
4829 | } | |
c906108c | 4830 | |
36dfb11c TT |
4831 | /* If we had hit a shared library event breakpoint, |
4832 | print_bp_stop_message would print out this message. If we hit an | |
4833 | OS-level shared library event, do the same thing. */ | |
4834 | if (kind == TARGET_WAITKIND_LOADED) | |
4835 | { | |
edcc5120 | 4836 | print_solib_event (0); |
36dfb11c TT |
4837 | return PRINT_NOTHING; |
4838 | } | |
4839 | ||
e514a9d6 | 4840 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4841 | with and nothing was printed. */ |
917317f4 | 4842 | return PRINT_UNKNOWN; |
c906108c SS |
4843 | } |
4844 | ||
c42bd95a DE |
4845 | /* Evaluate the expression EXP and return 1 if value is zero. |
4846 | This returns the inverse of the condition because it is called | |
4847 | from catch_errors which returns 0 if an exception happened, and if an | |
4848 | exception happens we want execution to stop. | |
4a64f543 | 4849 | The argument is a "struct expression *" that has been cast to a |
c42bd95a | 4850 | "void *" to make it pass through catch_errors. */ |
c906108c SS |
4851 | |
4852 | static int | |
4efb68b1 | 4853 | breakpoint_cond_eval (void *exp) |
c906108c | 4854 | { |
278cd55f | 4855 | struct value *mark = value_mark (); |
c5aa993b | 4856 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 4857 | |
c906108c SS |
4858 | value_free_to_mark (mark); |
4859 | return i; | |
4860 | } | |
4861 | ||
5760d0ab | 4862 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4863 | |
04afa70c TT |
4864 | bpstats::bpstats (struct bp_location *bl, bpstat **bs_link_pointer) |
4865 | : next (NULL), | |
4866 | bp_location_at (bl), | |
4867 | breakpoint_at (bl->owner), | |
4868 | commands (NULL), | |
4869 | old_val (NULL), | |
4870 | print (0), | |
4871 | stop (0), | |
4872 | print_it (print_it_normal) | |
c906108c | 4873 | { |
f431efe5 | 4874 | incref_bp_location (bl); |
04afa70c TT |
4875 | **bs_link_pointer = this; |
4876 | *bs_link_pointer = &next; | |
4877 | } | |
4878 | ||
4879 | bpstats::bpstats () | |
4880 | : next (NULL), | |
4881 | bp_location_at (NULL), | |
4882 | breakpoint_at (NULL), | |
4883 | commands (NULL), | |
4884 | old_val (NULL), | |
4885 | print (0), | |
4886 | stop (0), | |
4887 | print_it (print_it_normal) | |
4888 | { | |
c906108c SS |
4889 | } |
4890 | \f | |
d983da9c DJ |
4891 | /* The target has stopped with waitstatus WS. Check if any hardware |
4892 | watchpoints have triggered, according to the target. */ | |
4893 | ||
4894 | int | |
4895 | watchpoints_triggered (struct target_waitstatus *ws) | |
4896 | { | |
d92524f1 | 4897 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4898 | CORE_ADDR addr; |
4899 | struct breakpoint *b; | |
4900 | ||
4901 | if (!stopped_by_watchpoint) | |
4902 | { | |
4903 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4904 | as not triggered. */ | |
4905 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4906 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4907 | { |
4908 | struct watchpoint *w = (struct watchpoint *) b; | |
4909 | ||
4910 | w->watchpoint_triggered = watch_triggered_no; | |
4911 | } | |
d983da9c DJ |
4912 | |
4913 | return 0; | |
4914 | } | |
4915 | ||
4916 | if (!target_stopped_data_address (¤t_target, &addr)) | |
4917 | { | |
4918 | /* We were stopped by a watchpoint, but we don't know where. | |
4919 | Mark all watchpoints as unknown. */ | |
4920 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4921 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4922 | { |
4923 | struct watchpoint *w = (struct watchpoint *) b; | |
4924 | ||
4925 | w->watchpoint_triggered = watch_triggered_unknown; | |
4926 | } | |
d983da9c | 4927 | |
3c4797ba | 4928 | return 1; |
d983da9c DJ |
4929 | } |
4930 | ||
4931 | /* The target could report the data address. Mark watchpoints | |
4932 | affected by this data address as triggered, and all others as not | |
4933 | triggered. */ | |
4934 | ||
4935 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4936 | if (is_hardware_watchpoint (b)) |
d983da9c | 4937 | { |
3a5c3e22 | 4938 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4939 | struct bp_location *loc; |
d983da9c | 4940 | |
3a5c3e22 | 4941 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4942 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4943 | { |
3a5c3e22 | 4944 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4945 | { |
3a5c3e22 PA |
4946 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4947 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4948 | |
4949 | if (newaddr == start) | |
4950 | { | |
3a5c3e22 | 4951 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4952 | break; |
4953 | } | |
4954 | } | |
4955 | /* Exact match not required. Within range is sufficient. */ | |
4956 | else if (target_watchpoint_addr_within_range (¤t_target, | |
4957 | addr, loc->address, | |
4958 | loc->length)) | |
4959 | { | |
3a5c3e22 | 4960 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4961 | break; |
4962 | } | |
4963 | } | |
d983da9c DJ |
4964 | } |
4965 | ||
4966 | return 1; | |
4967 | } | |
4968 | ||
c906108c SS |
4969 | /* Possible return values for watchpoint_check (this can't be an enum |
4970 | because of check_errors). */ | |
4971 | /* The watchpoint has been deleted. */ | |
4972 | #define WP_DELETED 1 | |
4973 | /* The value has changed. */ | |
4974 | #define WP_VALUE_CHANGED 2 | |
4975 | /* The value has not changed. */ | |
4976 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
4977 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
4978 | #define WP_IGNORE 4 | |
c906108c SS |
4979 | |
4980 | #define BP_TEMPFLAG 1 | |
4981 | #define BP_HARDWAREFLAG 2 | |
4982 | ||
4a64f543 MS |
4983 | /* Evaluate watchpoint condition expression and check if its value |
4984 | changed. | |
553e4c11 JB |
4985 | |
4986 | P should be a pointer to struct bpstat, but is defined as a void * | |
4987 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
4988 | |
4989 | static int | |
4efb68b1 | 4990 | watchpoint_check (void *p) |
c906108c SS |
4991 | { |
4992 | bpstat bs = (bpstat) p; | |
3a5c3e22 | 4993 | struct watchpoint *b; |
c906108c SS |
4994 | struct frame_info *fr; |
4995 | int within_current_scope; | |
4996 | ||
f431efe5 | 4997 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4998 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4999 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 5000 | |
f6bc2008 PA |
5001 | /* If this is a local watchpoint, we only want to check if the |
5002 | watchpoint frame is in scope if the current thread is the thread | |
5003 | that was used to create the watchpoint. */ | |
5004 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 5005 | return WP_IGNORE; |
f6bc2008 | 5006 | |
c906108c SS |
5007 | if (b->exp_valid_block == NULL) |
5008 | within_current_scope = 1; | |
5009 | else | |
5010 | { | |
edb3359d DJ |
5011 | struct frame_info *frame = get_current_frame (); |
5012 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
5013 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
5014 | ||
c9cf6e20 | 5015 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
5016 | still in the function but the stack frame has already been |
5017 | invalidated. Since we can't rely on the values of local | |
5018 | variables after the stack has been destroyed, we are treating | |
5019 | the watchpoint in that state as `not changed' without further | |
5020 | checking. Don't mark watchpoints as changed if the current | |
5021 | frame is in an epilogue - even if they are in some other | |
5022 | frame, our view of the stack is likely to be wrong and | |
5023 | frame_find_by_id could error out. */ | |
c9cf6e20 | 5024 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 5025 | return WP_IGNORE; |
a0f49112 | 5026 | |
101dcfbe | 5027 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 5028 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
5029 | |
5030 | /* If we've gotten confused in the unwinder, we might have | |
5031 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
5032 | if (within_current_scope) |
5033 | { | |
5034 | struct symbol *function; | |
5035 | ||
5036 | function = get_frame_function (fr); | |
5037 | if (function == NULL | |
5038 | || !contained_in (b->exp_valid_block, | |
5039 | SYMBOL_BLOCK_VALUE (function))) | |
5040 | within_current_scope = 0; | |
5041 | } | |
69fbadd5 | 5042 | |
edb3359d | 5043 | if (within_current_scope) |
c906108c SS |
5044 | /* If we end up stopping, the current frame will get selected |
5045 | in normal_stop. So this call to select_frame won't affect | |
5046 | the user. */ | |
0f7d239c | 5047 | select_frame (fr); |
c906108c | 5048 | } |
c5aa993b | 5049 | |
c906108c SS |
5050 | if (within_current_scope) |
5051 | { | |
4a64f543 MS |
5052 | /* We use value_{,free_to_}mark because it could be a *long* |
5053 | time before we return to the command level and call | |
5054 | free_all_values. We can't call free_all_values because we | |
5055 | might be in the middle of evaluating a function call. */ | |
c906108c | 5056 | |
0cf6dd15 | 5057 | int pc = 0; |
9c06b0b4 | 5058 | struct value *mark; |
fa4727a6 DJ |
5059 | struct value *new_val; |
5060 | ||
c1fc2657 | 5061 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
5062 | /* Since we don't know the exact trigger address (from |
5063 | stopped_data_address), just tell the user we've triggered | |
5064 | a mask watchpoint. */ | |
5065 | return WP_VALUE_CHANGED; | |
5066 | ||
5067 | mark = value_mark (); | |
4d01a485 | 5068 | fetch_subexp_value (b->exp.get (), &pc, &new_val, NULL, NULL, 0); |
218d2fc6 | 5069 | |
bb9d5f81 PP |
5070 | if (b->val_bitsize != 0) |
5071 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
5072 | ||
4a64f543 MS |
5073 | /* We use value_equal_contents instead of value_equal because |
5074 | the latter coerces an array to a pointer, thus comparing just | |
5075 | the address of the array instead of its contents. This is | |
5076 | not what we want. */ | |
fa4727a6 | 5077 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 5078 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 5079 | { |
fa4727a6 DJ |
5080 | if (new_val != NULL) |
5081 | { | |
5082 | release_value (new_val); | |
5083 | value_free_to_mark (mark); | |
5084 | } | |
c906108c SS |
5085 | bs->old_val = b->val; |
5086 | b->val = new_val; | |
fa4727a6 | 5087 | b->val_valid = 1; |
c906108c SS |
5088 | return WP_VALUE_CHANGED; |
5089 | } | |
5090 | else | |
5091 | { | |
60e1c644 | 5092 | /* Nothing changed. */ |
c906108c | 5093 | value_free_to_mark (mark); |
c906108c SS |
5094 | return WP_VALUE_NOT_CHANGED; |
5095 | } | |
5096 | } | |
5097 | else | |
5098 | { | |
5099 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
5100 | if we temporarily ignored the watchpoint, then when |
5101 | we reenter the block in which it is valid it contains | |
5102 | garbage (in the case of a function, it may have two | |
5103 | garbage values, one before and one after the prologue). | |
5104 | So we can't even detect the first assignment to it and | |
5105 | watch after that (since the garbage may or may not equal | |
5106 | the first value assigned). */ | |
348d480f PA |
5107 | /* We print all the stop information in |
5108 | breakpoint_ops->print_it, but in this case, by the time we | |
5109 | call breakpoint_ops->print_it this bp will be deleted | |
5110 | already. So we have no choice but print the information | |
5111 | here. */ | |
468afe6c | 5112 | |
0e454242 | 5113 | SWITCH_THRU_ALL_UIS () |
468afe6c PA |
5114 | { |
5115 | struct ui_out *uiout = current_uiout; | |
5116 | ||
112e8700 SM |
5117 | if (uiout->is_mi_like_p ()) |
5118 | uiout->field_string | |
5119 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
5120 | uiout->text ("\nWatchpoint "); | |
c1fc2657 | 5121 | uiout->field_int ("wpnum", b->number); |
112e8700 | 5122 | uiout->text (" deleted because the program has left the block in\n" |
468afe6c PA |
5123 | "which its expression is valid.\n"); |
5124 | } | |
4ce44c66 | 5125 | |
cdac0397 | 5126 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 5127 | b->commands = NULL; |
d0fb5eae | 5128 | watchpoint_del_at_next_stop (b); |
c906108c SS |
5129 | |
5130 | return WP_DELETED; | |
5131 | } | |
5132 | } | |
5133 | ||
18a18393 | 5134 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
5135 | breakpoint location BL. This function does not check if we should |
5136 | stop, only if BL explains the stop. */ | |
5137 | ||
18a18393 | 5138 | static int |
6c95b8df | 5139 | bpstat_check_location (const struct bp_location *bl, |
09ac7c10 TT |
5140 | struct address_space *aspace, CORE_ADDR bp_addr, |
5141 | const struct target_waitstatus *ws) | |
18a18393 VP |
5142 | { |
5143 | struct breakpoint *b = bl->owner; | |
5144 | ||
348d480f | 5145 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
5146 | gdb_assert (b != NULL); |
5147 | ||
09ac7c10 | 5148 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
5149 | } |
5150 | ||
3a5c3e22 PA |
5151 | /* Determine if the watched values have actually changed, and we |
5152 | should stop. If not, set BS->stop to 0. */ | |
5153 | ||
18a18393 VP |
5154 | static void |
5155 | bpstat_check_watchpoint (bpstat bs) | |
5156 | { | |
2bdf28a0 | 5157 | const struct bp_location *bl; |
3a5c3e22 | 5158 | struct watchpoint *b; |
2bdf28a0 JK |
5159 | |
5160 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5161 | bl = bs->bp_location_at; |
2bdf28a0 | 5162 | gdb_assert (bl != NULL); |
3a5c3e22 | 5163 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 5164 | gdb_assert (b != NULL); |
18a18393 | 5165 | |
18a18393 | 5166 | { |
18a18393 VP |
5167 | int must_check_value = 0; |
5168 | ||
c1fc2657 | 5169 | if (b->type == bp_watchpoint) |
18a18393 VP |
5170 | /* For a software watchpoint, we must always check the |
5171 | watched value. */ | |
5172 | must_check_value = 1; | |
5173 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
5174 | /* We have a hardware watchpoint (read, write, or access) | |
5175 | and the target earlier reported an address watched by | |
5176 | this watchpoint. */ | |
5177 | must_check_value = 1; | |
5178 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
c1fc2657 | 5179 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
5180 | /* We were stopped by a hardware watchpoint, but the target could |
5181 | not report the data address. We must check the watchpoint's | |
5182 | value. Access and read watchpoints are out of luck; without | |
5183 | a data address, we can't figure it out. */ | |
5184 | must_check_value = 1; | |
3a5c3e22 | 5185 | |
18a18393 VP |
5186 | if (must_check_value) |
5187 | { | |
3e43a32a MS |
5188 | char *message |
5189 | = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
c1fc2657 | 5190 | b->number); |
18a18393 VP |
5191 | struct cleanup *cleanups = make_cleanup (xfree, message); |
5192 | int e = catch_errors (watchpoint_check, bs, message, | |
5193 | RETURN_MASK_ALL); | |
5194 | do_cleanups (cleanups); | |
5195 | switch (e) | |
5196 | { | |
5197 | case WP_DELETED: | |
5198 | /* We've already printed what needs to be printed. */ | |
5199 | bs->print_it = print_it_done; | |
5200 | /* Stop. */ | |
5201 | break; | |
60e1c644 PA |
5202 | case WP_IGNORE: |
5203 | bs->print_it = print_it_noop; | |
5204 | bs->stop = 0; | |
5205 | break; | |
18a18393 | 5206 | case WP_VALUE_CHANGED: |
c1fc2657 | 5207 | if (b->type == bp_read_watchpoint) |
18a18393 | 5208 | { |
85d721b8 PA |
5209 | /* There are two cases to consider here: |
5210 | ||
4a64f543 | 5211 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5212 | In that case, trust the target, and always report |
5213 | the watchpoint hit to the user. Even though | |
5214 | reads don't cause value changes, the value may | |
5215 | have changed since the last time it was read, and | |
5216 | since we're not trapping writes, we will not see | |
5217 | those, and as such we should ignore our notion of | |
5218 | old value. | |
5219 | ||
4a64f543 | 5220 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5221 | reads and writes. There are two ways this may |
5222 | happen: | |
5223 | ||
4a64f543 | 5224 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5225 | reads only, but can break on accesses (reads or |
5226 | writes), such as e.g., x86. We detect this case | |
5227 | at the time we try to insert read watchpoints. | |
5228 | ||
4a64f543 | 5229 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5230 | watchpoints, but, the user set an access or write |
5231 | watchpoint watching the same memory as this read | |
5232 | watchpoint. | |
5233 | ||
5234 | If we're watching memory writes as well as reads, | |
5235 | ignore watchpoint hits when we find that the | |
5236 | value hasn't changed, as reads don't cause | |
5237 | changes. This still gives false positives when | |
5238 | the program writes the same value to memory as | |
5239 | what there was already in memory (we will confuse | |
5240 | it for a read), but it's much better than | |
5241 | nothing. */ | |
5242 | ||
5243 | int other_write_watchpoint = 0; | |
5244 | ||
5245 | if (bl->watchpoint_type == hw_read) | |
5246 | { | |
5247 | struct breakpoint *other_b; | |
5248 | ||
5249 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
5250 | if (other_b->type == bp_hardware_watchpoint |
5251 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5252 | { |
3a5c3e22 PA |
5253 | struct watchpoint *other_w = |
5254 | (struct watchpoint *) other_b; | |
5255 | ||
5256 | if (other_w->watchpoint_triggered | |
5257 | == watch_triggered_yes) | |
5258 | { | |
5259 | other_write_watchpoint = 1; | |
5260 | break; | |
5261 | } | |
85d721b8 PA |
5262 | } |
5263 | } | |
5264 | ||
5265 | if (other_write_watchpoint | |
5266 | || bl->watchpoint_type == hw_access) | |
5267 | { | |
5268 | /* We're watching the same memory for writes, | |
5269 | and the value changed since the last time we | |
5270 | updated it, so this trap must be for a write. | |
5271 | Ignore it. */ | |
5272 | bs->print_it = print_it_noop; | |
5273 | bs->stop = 0; | |
5274 | } | |
18a18393 VP |
5275 | } |
5276 | break; | |
5277 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5278 | if (b->type == bp_hardware_watchpoint |
5279 | || b->type == bp_watchpoint) | |
18a18393 VP |
5280 | { |
5281 | /* Don't stop: write watchpoints shouldn't fire if | |
5282 | the value hasn't changed. */ | |
5283 | bs->print_it = print_it_noop; | |
5284 | bs->stop = 0; | |
5285 | } | |
5286 | /* Stop. */ | |
5287 | break; | |
5288 | default: | |
5289 | /* Can't happen. */ | |
5290 | case 0: | |
5291 | /* Error from catch_errors. */ | |
468afe6c | 5292 | { |
0e454242 | 5293 | SWITCH_THRU_ALL_UIS () |
468afe6c PA |
5294 | { |
5295 | printf_filtered (_("Watchpoint %d deleted.\n"), | |
c1fc2657 | 5296 | b->number); |
468afe6c PA |
5297 | } |
5298 | watchpoint_del_at_next_stop (b); | |
5299 | /* We've already printed what needs to be printed. */ | |
5300 | bs->print_it = print_it_done; | |
5301 | } | |
18a18393 VP |
5302 | break; |
5303 | } | |
5304 | } | |
5305 | else /* must_check_value == 0 */ | |
5306 | { | |
5307 | /* This is a case where some watchpoint(s) triggered, but | |
5308 | not at the address of this watchpoint, or else no | |
5309 | watchpoint triggered after all. So don't print | |
5310 | anything for this watchpoint. */ | |
5311 | bs->print_it = print_it_noop; | |
5312 | bs->stop = 0; | |
5313 | } | |
5314 | } | |
5315 | } | |
5316 | ||
7d4df6a4 DE |
5317 | /* For breakpoints that are currently marked as telling gdb to stop, |
5318 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5319 | of breakpoint referred to by BS. If we should not stop for this |
5320 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5321 | |
18a18393 VP |
5322 | static void |
5323 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
5324 | { | |
2bdf28a0 JK |
5325 | const struct bp_location *bl; |
5326 | struct breakpoint *b; | |
7d4df6a4 DE |
5327 | int value_is_zero = 0; |
5328 | struct expression *cond; | |
5329 | ||
5330 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5331 | |
5332 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5333 | bl = bs->bp_location_at; |
2bdf28a0 | 5334 | gdb_assert (bl != NULL); |
f431efe5 | 5335 | b = bs->breakpoint_at; |
2bdf28a0 | 5336 | gdb_assert (b != NULL); |
18a18393 | 5337 | |
b775012e LM |
5338 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5339 | need to do so again since GDB does not know if we stopped due to a | |
5340 | breakpoint or a single step breakpoint. */ | |
5341 | ||
18a18393 | 5342 | if (frame_id_p (b->frame_id) |
edb3359d | 5343 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5344 | { |
7d4df6a4 DE |
5345 | bs->stop = 0; |
5346 | return; | |
5347 | } | |
60e1c644 | 5348 | |
12ab52e9 PA |
5349 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5350 | evaluating the condition if this isn't the specified | |
5351 | thread/task. */ | |
5d5658a1 | 5352 | if ((b->thread != -1 && b->thread != ptid_to_global_thread_id (ptid)) |
12ab52e9 PA |
5353 | || (b->task != 0 && b->task != ada_get_task_number (ptid))) |
5354 | ||
6c1b0f7b DE |
5355 | { |
5356 | bs->stop = 0; | |
5357 | return; | |
5358 | } | |
5359 | ||
6dddc817 DE |
5360 | /* Evaluate extension language breakpoints that have a "stop" method |
5361 | implemented. */ | |
5362 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5363 | |
7d4df6a4 DE |
5364 | if (is_watchpoint (b)) |
5365 | { | |
5366 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5367 | |
4d01a485 | 5368 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5369 | } |
5370 | else | |
4d01a485 | 5371 | cond = bl->cond.get (); |
60e1c644 | 5372 | |
7d4df6a4 DE |
5373 | if (cond && b->disposition != disp_del_at_next_stop) |
5374 | { | |
5375 | int within_current_scope = 1; | |
5376 | struct watchpoint * w; | |
60e1c644 | 5377 | |
7d4df6a4 DE |
5378 | /* We use value_mark and value_free_to_mark because it could |
5379 | be a long time before we return to the command level and | |
5380 | call free_all_values. We can't call free_all_values | |
5381 | because we might be in the middle of evaluating a | |
5382 | function call. */ | |
5383 | struct value *mark = value_mark (); | |
5384 | ||
5385 | if (is_watchpoint (b)) | |
5386 | w = (struct watchpoint *) b; | |
5387 | else | |
5388 | w = NULL; | |
5389 | ||
5390 | /* Need to select the frame, with all that implies so that | |
5391 | the conditions will have the right context. Because we | |
5392 | use the frame, we will not see an inlined function's | |
5393 | variables when we arrive at a breakpoint at the start | |
5394 | of the inlined function; the current frame will be the | |
5395 | call site. */ | |
5396 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5397 | select_frame (get_current_frame ()); | |
5398 | else | |
18a18393 | 5399 | { |
7d4df6a4 DE |
5400 | struct frame_info *frame; |
5401 | ||
5402 | /* For local watchpoint expressions, which particular | |
5403 | instance of a local is being watched matters, so we | |
5404 | keep track of the frame to evaluate the expression | |
5405 | in. To evaluate the condition however, it doesn't | |
5406 | really matter which instantiation of the function | |
5407 | where the condition makes sense triggers the | |
5408 | watchpoint. This allows an expression like "watch | |
5409 | global if q > 10" set in `func', catch writes to | |
5410 | global on all threads that call `func', or catch | |
5411 | writes on all recursive calls of `func' by a single | |
5412 | thread. We simply always evaluate the condition in | |
5413 | the innermost frame that's executing where it makes | |
5414 | sense to evaluate the condition. It seems | |
5415 | intuitive. */ | |
5416 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5417 | if (frame != NULL) | |
5418 | select_frame (frame); | |
5419 | else | |
5420 | within_current_scope = 0; | |
18a18393 | 5421 | } |
7d4df6a4 DE |
5422 | if (within_current_scope) |
5423 | value_is_zero | |
5424 | = catch_errors (breakpoint_cond_eval, cond, | |
5425 | "Error in testing breakpoint condition:\n", | |
5426 | RETURN_MASK_ALL); | |
5427 | else | |
18a18393 | 5428 | { |
7d4df6a4 DE |
5429 | warning (_("Watchpoint condition cannot be tested " |
5430 | "in the current scope")); | |
5431 | /* If we failed to set the right context for this | |
5432 | watchpoint, unconditionally report it. */ | |
5433 | value_is_zero = 0; | |
18a18393 | 5434 | } |
7d4df6a4 DE |
5435 | /* FIXME-someday, should give breakpoint #. */ |
5436 | value_free_to_mark (mark); | |
18a18393 | 5437 | } |
7d4df6a4 DE |
5438 | |
5439 | if (cond && value_is_zero) | |
5440 | { | |
5441 | bs->stop = 0; | |
5442 | } | |
7d4df6a4 DE |
5443 | else if (b->ignore_count > 0) |
5444 | { | |
5445 | b->ignore_count--; | |
5446 | bs->stop = 0; | |
5447 | /* Increase the hit count even though we don't stop. */ | |
5448 | ++(b->hit_count); | |
5449 | observer_notify_breakpoint_modified (b); | |
5450 | } | |
18a18393 VP |
5451 | } |
5452 | ||
1cf4d951 PA |
5453 | /* Returns true if we need to track moribund locations of LOC's type |
5454 | on the current target. */ | |
5455 | ||
5456 | static int | |
5457 | need_moribund_for_location_type (struct bp_location *loc) | |
5458 | { | |
5459 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5460 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5461 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5462 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5463 | } | |
5464 | ||
18a18393 | 5465 | |
9709f61c | 5466 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 5467 | BP_ADDR in thread PTID. |
c906108c | 5468 | |
d983da9c | 5469 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
5470 | don't understand this stop. Result is a chain of bpstat's such |
5471 | that: | |
c906108c | 5472 | |
c5aa993b | 5473 | if we don't understand the stop, the result is a null pointer. |
c906108c | 5474 | |
c5aa993b | 5475 | if we understand why we stopped, the result is not null. |
c906108c | 5476 | |
c5aa993b JM |
5477 | Each element of the chain refers to a particular breakpoint or |
5478 | watchpoint at which we have stopped. (We may have stopped for | |
5479 | several reasons concurrently.) | |
c906108c | 5480 | |
c5aa993b JM |
5481 | Each element of the chain has valid next, breakpoint_at, |
5482 | commands, FIXME??? fields. */ | |
c906108c SS |
5483 | |
5484 | bpstat | |
6c95b8df | 5485 | bpstat_stop_status (struct address_space *aspace, |
09ac7c10 TT |
5486 | CORE_ADDR bp_addr, ptid_t ptid, |
5487 | const struct target_waitstatus *ws) | |
c906108c | 5488 | { |
0d381245 | 5489 | struct breakpoint *b = NULL; |
afe38095 | 5490 | struct bp_location *bl; |
20874c92 | 5491 | struct bp_location *loc; |
5760d0ab JK |
5492 | /* First item of allocated bpstat's. */ |
5493 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 5494 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 5495 | bpstat bs; |
20874c92 | 5496 | int ix; |
429374b8 | 5497 | int need_remove_insert; |
f431efe5 | 5498 | int removed_any; |
c906108c | 5499 | |
f431efe5 PA |
5500 | /* First, build the bpstat chain with locations that explain a |
5501 | target stop, while being careful to not set the target running, | |
5502 | as that may invalidate locations (in particular watchpoint | |
5503 | locations are recreated). Resuming will happen here with | |
5504 | breakpoint conditions or watchpoint expressions that include | |
5505 | inferior function calls. */ | |
c5aa993b | 5506 | |
429374b8 JK |
5507 | ALL_BREAKPOINTS (b) |
5508 | { | |
1a853c52 | 5509 | if (!breakpoint_enabled (b)) |
429374b8 | 5510 | continue; |
a5606eee | 5511 | |
429374b8 JK |
5512 | for (bl = b->loc; bl != NULL; bl = bl->next) |
5513 | { | |
4a64f543 MS |
5514 | /* For hardware watchpoints, we look only at the first |
5515 | location. The watchpoint_check function will work on the | |
5516 | entire expression, not the individual locations. For | |
5517 | read watchpoints, the watchpoints_triggered function has | |
5518 | checked all locations already. */ | |
429374b8 JK |
5519 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5520 | break; | |
18a18393 | 5521 | |
f6592439 | 5522 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5523 | continue; |
c5aa993b | 5524 | |
09ac7c10 | 5525 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5526 | continue; |
c5aa993b | 5527 | |
4a64f543 MS |
5528 | /* Come here if it's a watchpoint, or if the break address |
5529 | matches. */ | |
c5aa993b | 5530 | |
04afa70c | 5531 | bs = new bpstats (bl, &bs_link); /* Alloc a bpstat to |
4a64f543 | 5532 | explain stop. */ |
c5aa993b | 5533 | |
f431efe5 PA |
5534 | /* Assume we stop. Should we find a watchpoint that is not |
5535 | actually triggered, or if the condition of the breakpoint | |
5536 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5537 | bs->stop = 1; |
5538 | bs->print = 1; | |
d983da9c | 5539 | |
f431efe5 PA |
5540 | /* If this is a scope breakpoint, mark the associated |
5541 | watchpoint as triggered so that we will handle the | |
5542 | out-of-scope event. We'll get to the watchpoint next | |
5543 | iteration. */ | |
d0fb5eae | 5544 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5545 | { |
5546 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5547 | ||
5548 | w->watchpoint_triggered = watch_triggered_yes; | |
5549 | } | |
f431efe5 PA |
5550 | } |
5551 | } | |
5552 | ||
7c16b83e | 5553 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5554 | if (!target_supports_stopped_by_sw_breakpoint () |
5555 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5556 | { |
1cf4d951 | 5557 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
f431efe5 | 5558 | { |
1cf4d951 PA |
5559 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5560 | && need_moribund_for_location_type (loc)) | |
5561 | { | |
04afa70c | 5562 | bs = new bpstats (loc, &bs_link); |
1cf4d951 PA |
5563 | /* For hits of moribund locations, we should just proceed. */ |
5564 | bs->stop = 0; | |
5565 | bs->print = 0; | |
5566 | bs->print_it = print_it_noop; | |
5567 | } | |
f431efe5 PA |
5568 | } |
5569 | } | |
5570 | ||
edcc5120 TT |
5571 | /* A bit of special processing for shlib breakpoints. We need to |
5572 | process solib loading here, so that the lists of loaded and | |
5573 | unloaded libraries are correct before we handle "catch load" and | |
5574 | "catch unload". */ | |
5575 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5576 | { | |
5d268276 | 5577 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5578 | { |
5579 | handle_solib_event (); | |
5580 | break; | |
5581 | } | |
5582 | } | |
5583 | ||
f431efe5 PA |
5584 | /* Now go through the locations that caused the target to stop, and |
5585 | check whether we're interested in reporting this stop to higher | |
5586 | layers, or whether we should resume the target transparently. */ | |
5587 | ||
5588 | removed_any = 0; | |
5589 | ||
5760d0ab | 5590 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5591 | { |
5592 | if (!bs->stop) | |
5593 | continue; | |
5594 | ||
f431efe5 | 5595 | b = bs->breakpoint_at; |
348d480f PA |
5596 | b->ops->check_status (bs); |
5597 | if (bs->stop) | |
28010a5d | 5598 | { |
348d480f | 5599 | bpstat_check_breakpoint_conditions (bs, ptid); |
f431efe5 | 5600 | |
429374b8 JK |
5601 | if (bs->stop) |
5602 | { | |
5603 | ++(b->hit_count); | |
8d3788bd | 5604 | observer_notify_breakpoint_modified (b); |
c906108c | 5605 | |
4a64f543 | 5606 | /* We will stop here. */ |
429374b8 JK |
5607 | if (b->disposition == disp_disable) |
5608 | { | |
816338b5 | 5609 | --(b->enable_count); |
1a853c52 | 5610 | if (b->enable_count <= 0) |
429374b8 | 5611 | b->enable_state = bp_disabled; |
f431efe5 | 5612 | removed_any = 1; |
429374b8 JK |
5613 | } |
5614 | if (b->silent) | |
5615 | bs->print = 0; | |
5616 | bs->commands = b->commands; | |
abf85f46 | 5617 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5618 | ? bs->commands.get () : NULL)) |
abf85f46 | 5619 | bs->print = 0; |
9d6e6e84 HZ |
5620 | |
5621 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5622 | } |
5623 | ||
348d480f | 5624 | } |
a9b3a50f PA |
5625 | |
5626 | /* Print nothing for this entry if we don't stop or don't | |
5627 | print. */ | |
5628 | if (!bs->stop || !bs->print) | |
5629 | bs->print_it = print_it_noop; | |
429374b8 | 5630 | } |
876fa593 | 5631 | |
d983da9c DJ |
5632 | /* If we aren't stopping, the value of some hardware watchpoint may |
5633 | not have changed, but the intermediate memory locations we are | |
5634 | watching may have. Don't bother if we're stopping; this will get | |
5635 | done later. */ | |
d832cb68 | 5636 | need_remove_insert = 0; |
5760d0ab JK |
5637 | if (! bpstat_causes_stop (bs_head)) |
5638 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5639 | if (!bs->stop |
f431efe5 PA |
5640 | && bs->breakpoint_at |
5641 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5642 | { |
3a5c3e22 PA |
5643 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5644 | ||
5645 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5646 | need_remove_insert = 1; |
d983da9c DJ |
5647 | } |
5648 | ||
d832cb68 | 5649 | if (need_remove_insert) |
44702360 | 5650 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5651 | else if (removed_any) |
44702360 | 5652 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5653 | |
5760d0ab | 5654 | return bs_head; |
c906108c | 5655 | } |
628fe4e4 JK |
5656 | |
5657 | static void | |
5658 | handle_jit_event (void) | |
5659 | { | |
5660 | struct frame_info *frame; | |
5661 | struct gdbarch *gdbarch; | |
5662 | ||
243a9253 PA |
5663 | if (debug_infrun) |
5664 | fprintf_unfiltered (gdb_stdlog, "handling bp_jit_event\n"); | |
5665 | ||
628fe4e4 JK |
5666 | /* Switch terminal for any messages produced by |
5667 | breakpoint_re_set. */ | |
223ffa71 | 5668 | target_terminal::ours_for_output (); |
628fe4e4 JK |
5669 | |
5670 | frame = get_current_frame (); | |
5671 | gdbarch = get_frame_arch (frame); | |
5672 | ||
5673 | jit_event_handler (gdbarch); | |
5674 | ||
223ffa71 | 5675 | target_terminal::inferior (); |
628fe4e4 JK |
5676 | } |
5677 | ||
5678 | /* Prepare WHAT final decision for infrun. */ | |
5679 | ||
5680 | /* Decide what infrun needs to do with this bpstat. */ | |
5681 | ||
c906108c | 5682 | struct bpstat_what |
0e30163f | 5683 | bpstat_what (bpstat bs_head) |
c906108c | 5684 | { |
c906108c | 5685 | struct bpstat_what retval; |
0e30163f | 5686 | bpstat bs; |
c906108c | 5687 | |
628fe4e4 | 5688 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5689 | retval.call_dummy = STOP_NONE; |
186c406b | 5690 | retval.is_longjmp = 0; |
628fe4e4 | 5691 | |
0e30163f | 5692 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5693 | { |
628fe4e4 JK |
5694 | /* Extract this BS's action. After processing each BS, we check |
5695 | if its action overrides all we've seem so far. */ | |
5696 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5697 | enum bptype bptype; | |
5698 | ||
c906108c | 5699 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5700 | { |
5701 | /* I suspect this can happen if it was a momentary | |
5702 | breakpoint which has since been deleted. */ | |
5703 | bptype = bp_none; | |
5704 | } | |
20874c92 | 5705 | else |
f431efe5 | 5706 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5707 | |
5708 | switch (bptype) | |
c906108c SS |
5709 | { |
5710 | case bp_none: | |
628fe4e4 | 5711 | break; |
c906108c SS |
5712 | case bp_breakpoint: |
5713 | case bp_hardware_breakpoint: | |
7c16b83e | 5714 | case bp_single_step: |
c906108c SS |
5715 | case bp_until: |
5716 | case bp_finish: | |
a9b3a50f | 5717 | case bp_shlib_event: |
c906108c SS |
5718 | if (bs->stop) |
5719 | { | |
5720 | if (bs->print) | |
628fe4e4 | 5721 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5722 | else |
628fe4e4 | 5723 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5724 | } |
5725 | else | |
628fe4e4 | 5726 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5727 | break; |
5728 | case bp_watchpoint: | |
5729 | case bp_hardware_watchpoint: | |
5730 | case bp_read_watchpoint: | |
5731 | case bp_access_watchpoint: | |
5732 | if (bs->stop) | |
5733 | { | |
5734 | if (bs->print) | |
628fe4e4 | 5735 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5736 | else |
628fe4e4 | 5737 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5738 | } |
5739 | else | |
628fe4e4 JK |
5740 | { |
5741 | /* There was a watchpoint, but we're not stopping. | |
5742 | This requires no further action. */ | |
5743 | } | |
c906108c SS |
5744 | break; |
5745 | case bp_longjmp: | |
e2e4d78b | 5746 | case bp_longjmp_call_dummy: |
186c406b | 5747 | case bp_exception: |
0a39bb32 PA |
5748 | if (bs->stop) |
5749 | { | |
5750 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5751 | retval.is_longjmp = bptype != bp_exception; | |
5752 | } | |
5753 | else | |
5754 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5755 | break; |
5756 | case bp_longjmp_resume: | |
186c406b | 5757 | case bp_exception_resume: |
0a39bb32 PA |
5758 | if (bs->stop) |
5759 | { | |
5760 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5761 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5762 | } | |
5763 | else | |
5764 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5765 | break; |
5766 | case bp_step_resume: | |
5767 | if (bs->stop) | |
628fe4e4 JK |
5768 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5769 | else | |
c906108c | 5770 | { |
628fe4e4 JK |
5771 | /* It is for the wrong frame. */ |
5772 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5773 | } |
c906108c | 5774 | break; |
2c03e5be PA |
5775 | case bp_hp_step_resume: |
5776 | if (bs->stop) | |
5777 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5778 | else | |
5779 | { | |
5780 | /* It is for the wrong frame. */ | |
5781 | this_action = BPSTAT_WHAT_SINGLE; | |
5782 | } | |
5783 | break; | |
c906108c | 5784 | case bp_watchpoint_scope: |
c4093a6a | 5785 | case bp_thread_event: |
1900040c | 5786 | case bp_overlay_event: |
0fd8e87f | 5787 | case bp_longjmp_master: |
aa7d318d | 5788 | case bp_std_terminate_master: |
186c406b | 5789 | case bp_exception_master: |
628fe4e4 | 5790 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5791 | break; |
ce78b96d | 5792 | case bp_catchpoint: |
c5aa993b JM |
5793 | if (bs->stop) |
5794 | { | |
5795 | if (bs->print) | |
628fe4e4 | 5796 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5797 | else |
628fe4e4 | 5798 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5799 | } |
5800 | else | |
628fe4e4 JK |
5801 | { |
5802 | /* There was a catchpoint, but we're not stopping. | |
5803 | This requires no further action. */ | |
5804 | } | |
5805 | break; | |
628fe4e4 | 5806 | case bp_jit_event: |
628fe4e4 | 5807 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5808 | break; |
c906108c | 5809 | case bp_call_dummy: |
53a5351d JM |
5810 | /* Make sure the action is stop (silent or noisy), |
5811 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5812 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5813 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5814 | break; |
5815 | case bp_std_terminate: | |
5816 | /* Make sure the action is stop (silent or noisy), | |
5817 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5818 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5819 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5820 | break; |
1042e4c0 | 5821 | case bp_tracepoint: |
7a697b8d | 5822 | case bp_fast_tracepoint: |
0fb4aa4b | 5823 | case bp_static_tracepoint: |
1042e4c0 SS |
5824 | /* Tracepoint hits should not be reported back to GDB, and |
5825 | if one got through somehow, it should have been filtered | |
5826 | out already. */ | |
5827 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5828 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5829 | break; |
5830 | case bp_gnu_ifunc_resolver: | |
5831 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5832 | this_action = BPSTAT_WHAT_SINGLE; | |
5833 | break; | |
5834 | case bp_gnu_ifunc_resolver_return: | |
5835 | /* The breakpoint will be removed, execution will restart from the | |
5836 | PC of the former breakpoint. */ | |
5837 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5838 | break; | |
e7e0cddf SS |
5839 | |
5840 | case bp_dprintf: | |
a11cfd87 HZ |
5841 | if (bs->stop) |
5842 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5843 | else | |
5844 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5845 | break; |
5846 | ||
628fe4e4 JK |
5847 | default: |
5848 | internal_error (__FILE__, __LINE__, | |
5849 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5850 | } |
628fe4e4 | 5851 | |
325fac50 | 5852 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 5853 | } |
628fe4e4 | 5854 | |
243a9253 PA |
5855 | return retval; |
5856 | } | |
628fe4e4 | 5857 | |
243a9253 PA |
5858 | void |
5859 | bpstat_run_callbacks (bpstat bs_head) | |
5860 | { | |
5861 | bpstat bs; | |
628fe4e4 | 5862 | |
0e30163f JK |
5863 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5864 | { | |
5865 | struct breakpoint *b = bs->breakpoint_at; | |
5866 | ||
5867 | if (b == NULL) | |
5868 | continue; | |
5869 | switch (b->type) | |
5870 | { | |
243a9253 PA |
5871 | case bp_jit_event: |
5872 | handle_jit_event (); | |
5873 | break; | |
0e30163f JK |
5874 | case bp_gnu_ifunc_resolver: |
5875 | gnu_ifunc_resolver_stop (b); | |
5876 | break; | |
5877 | case bp_gnu_ifunc_resolver_return: | |
5878 | gnu_ifunc_resolver_return_stop (b); | |
5879 | break; | |
5880 | } | |
5881 | } | |
c906108c SS |
5882 | } |
5883 | ||
5884 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5885 | without hardware support). This isn't related to a specific bpstat, | |
5886 | just to things like whether watchpoints are set. */ | |
5887 | ||
c5aa993b | 5888 | int |
fba45db2 | 5889 | bpstat_should_step (void) |
c906108c SS |
5890 | { |
5891 | struct breakpoint *b; | |
cc59ec59 | 5892 | |
c906108c | 5893 | ALL_BREAKPOINTS (b) |
717a8278 | 5894 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5895 | return 1; |
c906108c SS |
5896 | return 0; |
5897 | } | |
5898 | ||
67822962 PA |
5899 | int |
5900 | bpstat_causes_stop (bpstat bs) | |
5901 | { | |
5902 | for (; bs != NULL; bs = bs->next) | |
5903 | if (bs->stop) | |
5904 | return 1; | |
5905 | ||
5906 | return 0; | |
5907 | } | |
5908 | ||
c906108c | 5909 | \f |
c5aa993b | 5910 | |
170b53b2 UW |
5911 | /* Compute a string of spaces suitable to indent the next line |
5912 | so it starts at the position corresponding to the table column | |
5913 | named COL_NAME in the currently active table of UIOUT. */ | |
5914 | ||
5915 | static char * | |
5916 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5917 | { | |
5918 | static char wrap_indent[80]; | |
5919 | int i, total_width, width, align; | |
c5209615 | 5920 | const char *text; |
170b53b2 UW |
5921 | |
5922 | total_width = 0; | |
112e8700 | 5923 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
5924 | { |
5925 | if (strcmp (text, col_name) == 0) | |
5926 | { | |
5927 | gdb_assert (total_width < sizeof wrap_indent); | |
5928 | memset (wrap_indent, ' ', total_width); | |
5929 | wrap_indent[total_width] = 0; | |
5930 | ||
5931 | return wrap_indent; | |
5932 | } | |
5933 | ||
5934 | total_width += width + 1; | |
5935 | } | |
5936 | ||
5937 | return NULL; | |
5938 | } | |
5939 | ||
b775012e LM |
5940 | /* Determine if the locations of this breakpoint will have their conditions |
5941 | evaluated by the target, host or a mix of both. Returns the following: | |
5942 | ||
5943 | "host": Host evals condition. | |
5944 | "host or target": Host or Target evals condition. | |
5945 | "target": Target evals condition. | |
5946 | */ | |
5947 | ||
5948 | static const char * | |
5949 | bp_condition_evaluator (struct breakpoint *b) | |
5950 | { | |
5951 | struct bp_location *bl; | |
5952 | char host_evals = 0; | |
5953 | char target_evals = 0; | |
5954 | ||
5955 | if (!b) | |
5956 | return NULL; | |
5957 | ||
5958 | if (!is_breakpoint (b)) | |
5959 | return NULL; | |
5960 | ||
5961 | if (gdb_evaluates_breakpoint_condition_p () | |
5962 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5963 | return condition_evaluation_host; | |
5964 | ||
5965 | for (bl = b->loc; bl; bl = bl->next) | |
5966 | { | |
5967 | if (bl->cond_bytecode) | |
5968 | target_evals++; | |
5969 | else | |
5970 | host_evals++; | |
5971 | } | |
5972 | ||
5973 | if (host_evals && target_evals) | |
5974 | return condition_evaluation_both; | |
5975 | else if (target_evals) | |
5976 | return condition_evaluation_target; | |
5977 | else | |
5978 | return condition_evaluation_host; | |
5979 | } | |
5980 | ||
5981 | /* Determine the breakpoint location's condition evaluator. This is | |
5982 | similar to bp_condition_evaluator, but for locations. */ | |
5983 | ||
5984 | static const char * | |
5985 | bp_location_condition_evaluator (struct bp_location *bl) | |
5986 | { | |
5987 | if (bl && !is_breakpoint (bl->owner)) | |
5988 | return NULL; | |
5989 | ||
5990 | if (gdb_evaluates_breakpoint_condition_p () | |
5991 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5992 | return condition_evaluation_host; | |
5993 | ||
5994 | if (bl && bl->cond_bytecode) | |
5995 | return condition_evaluation_target; | |
5996 | else | |
5997 | return condition_evaluation_host; | |
5998 | } | |
5999 | ||
859825b8 JK |
6000 | /* Print the LOC location out of the list of B->LOC locations. */ |
6001 | ||
170b53b2 UW |
6002 | static void |
6003 | print_breakpoint_location (struct breakpoint *b, | |
6004 | struct bp_location *loc) | |
0d381245 | 6005 | { |
79a45e25 | 6006 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
6007 | |
6008 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 6009 | |
859825b8 JK |
6010 | if (loc != NULL && loc->shlib_disabled) |
6011 | loc = NULL; | |
6012 | ||
6c95b8df PA |
6013 | if (loc != NULL) |
6014 | set_current_program_space (loc->pspace); | |
6015 | ||
56435ebe | 6016 | if (b->display_canonical) |
d28cd78a | 6017 | uiout->field_string ("what", event_location_to_string (b->location.get ())); |
2f202fde | 6018 | else if (loc && loc->symtab) |
0d381245 VP |
6019 | { |
6020 | struct symbol *sym | |
6021 | = find_pc_sect_function (loc->address, loc->section); | |
6022 | if (sym) | |
6023 | { | |
112e8700 SM |
6024 | uiout->text ("in "); |
6025 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym)); | |
6026 | uiout->text (" "); | |
6027 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
6028 | uiout->text ("at "); | |
0d381245 | 6029 | } |
112e8700 | 6030 | uiout->field_string ("file", |
05cba821 | 6031 | symtab_to_filename_for_display (loc->symtab)); |
112e8700 | 6032 | uiout->text (":"); |
05cba821 | 6033 | |
112e8700 SM |
6034 | if (uiout->is_mi_like_p ()) |
6035 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 6036 | |
112e8700 | 6037 | uiout->field_int ("line", loc->line_number); |
0d381245 | 6038 | } |
859825b8 | 6039 | else if (loc) |
0d381245 | 6040 | { |
d7e74731 | 6041 | string_file stb; |
170b53b2 | 6042 | |
d7e74731 | 6043 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 6044 | demangle, ""); |
112e8700 | 6045 | uiout->field_stream ("at", stb); |
0d381245 | 6046 | } |
859825b8 | 6047 | else |
f00aae0f | 6048 | { |
d28cd78a TT |
6049 | uiout->field_string ("pending", |
6050 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
6051 | /* If extra_string is available, it could be holding a condition |
6052 | or dprintf arguments. In either case, make sure it is printed, | |
6053 | too, but only for non-MI streams. */ | |
112e8700 | 6054 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
6055 | { |
6056 | if (b->type == bp_dprintf) | |
112e8700 | 6057 | uiout->text (","); |
f00aae0f | 6058 | else |
112e8700 SM |
6059 | uiout->text (" "); |
6060 | uiout->text (b->extra_string); | |
f00aae0f KS |
6061 | } |
6062 | } | |
6c95b8df | 6063 | |
b775012e LM |
6064 | if (loc && is_breakpoint (b) |
6065 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
6066 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
6067 | { | |
112e8700 SM |
6068 | uiout->text (" ("); |
6069 | uiout->field_string ("evaluated-by", | |
b775012e | 6070 | bp_location_condition_evaluator (loc)); |
112e8700 | 6071 | uiout->text (")"); |
b775012e | 6072 | } |
0d381245 VP |
6073 | } |
6074 | ||
269b11a2 PA |
6075 | static const char * |
6076 | bptype_string (enum bptype type) | |
c906108c | 6077 | { |
c4093a6a JM |
6078 | struct ep_type_description |
6079 | { | |
6080 | enum bptype type; | |
a121b7c1 | 6081 | const char *description; |
c4093a6a JM |
6082 | }; |
6083 | static struct ep_type_description bptypes[] = | |
c906108c | 6084 | { |
c5aa993b JM |
6085 | {bp_none, "?deleted?"}, |
6086 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 6087 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 6088 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
6089 | {bp_until, "until"}, |
6090 | {bp_finish, "finish"}, | |
6091 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 6092 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
6093 | {bp_read_watchpoint, "read watchpoint"}, |
6094 | {bp_access_watchpoint, "acc watchpoint"}, | |
6095 | {bp_longjmp, "longjmp"}, | |
6096 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 6097 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
6098 | {bp_exception, "exception"}, |
6099 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 6100 | {bp_step_resume, "step resume"}, |
2c03e5be | 6101 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
6102 | {bp_watchpoint_scope, "watchpoint scope"}, |
6103 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 6104 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 6105 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 6106 | {bp_thread_event, "thread events"}, |
1900040c | 6107 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 6108 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 6109 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 6110 | {bp_exception_master, "exception master"}, |
ce78b96d | 6111 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 6112 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 6113 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 6114 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 6115 | {bp_dprintf, "dprintf"}, |
4efc6507 | 6116 | {bp_jit_event, "jit events"}, |
0e30163f JK |
6117 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
6118 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 6119 | }; |
269b11a2 PA |
6120 | |
6121 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
6122 | || ((int) type != bptypes[(int) type].type)) | |
6123 | internal_error (__FILE__, __LINE__, | |
6124 | _("bptypes table does not describe type #%d."), | |
6125 | (int) type); | |
6126 | ||
6127 | return bptypes[(int) type].description; | |
6128 | } | |
6129 | ||
998580f1 MK |
6130 | /* For MI, output a field named 'thread-groups' with a list as the value. |
6131 | For CLI, prefix the list with the string 'inf'. */ | |
6132 | ||
6133 | static void | |
6134 | output_thread_groups (struct ui_out *uiout, | |
6135 | const char *field_name, | |
6136 | VEC(int) *inf_num, | |
6137 | int mi_only) | |
6138 | { | |
112e8700 | 6139 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
6140 | int inf; |
6141 | int i; | |
6142 | ||
6143 | /* For backward compatibility, don't display inferiors in CLI unless | |
6144 | there are several. Always display them for MI. */ | |
6145 | if (!is_mi && mi_only) | |
6146 | return; | |
6147 | ||
10f489e5 | 6148 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 6149 | |
998580f1 MK |
6150 | for (i = 0; VEC_iterate (int, inf_num, i, inf); ++i) |
6151 | { | |
6152 | if (is_mi) | |
6153 | { | |
6154 | char mi_group[10]; | |
6155 | ||
6156 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf); | |
112e8700 | 6157 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
6158 | } |
6159 | else | |
6160 | { | |
6161 | if (i == 0) | |
112e8700 | 6162 | uiout->text (" inf "); |
998580f1 | 6163 | else |
112e8700 | 6164 | uiout->text (", "); |
998580f1 | 6165 | |
112e8700 | 6166 | uiout->text (plongest (inf)); |
998580f1 MK |
6167 | } |
6168 | } | |
998580f1 MK |
6169 | } |
6170 | ||
269b11a2 PA |
6171 | /* Print B to gdb_stdout. */ |
6172 | ||
6173 | static void | |
6174 | print_one_breakpoint_location (struct breakpoint *b, | |
6175 | struct bp_location *loc, | |
6176 | int loc_number, | |
6177 | struct bp_location **last_loc, | |
269b11a2 PA |
6178 | int allflag) |
6179 | { | |
6180 | struct command_line *l; | |
c2c6d25f | 6181 | static char bpenables[] = "nynny"; |
c906108c | 6182 | |
79a45e25 | 6183 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6184 | int header_of_multiple = 0; |
6185 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6186 | struct value_print_options opts; |
6187 | ||
6188 | get_user_print_options (&opts); | |
0d381245 VP |
6189 | |
6190 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6191 | /* See comment in print_one_breakpoint concerning treatment of |
6192 | breakpoints with single disabled location. */ | |
0d381245 VP |
6193 | if (loc == NULL |
6194 | && (b->loc != NULL | |
6195 | && (b->loc->next != NULL || !b->loc->enabled))) | |
6196 | header_of_multiple = 1; | |
6197 | if (loc == NULL) | |
6198 | loc = b->loc; | |
6199 | ||
c4093a6a JM |
6200 | annotate_record (); |
6201 | ||
6202 | /* 1 */ | |
6203 | annotate_field (0); | |
0d381245 VP |
6204 | if (part_of_multiple) |
6205 | { | |
6206 | char *formatted; | |
0c6773c1 | 6207 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
112e8700 | 6208 | uiout->field_string ("number", formatted); |
0d381245 VP |
6209 | xfree (formatted); |
6210 | } | |
6211 | else | |
6212 | { | |
112e8700 | 6213 | uiout->field_int ("number", b->number); |
0d381245 | 6214 | } |
c4093a6a JM |
6215 | |
6216 | /* 2 */ | |
6217 | annotate_field (1); | |
0d381245 | 6218 | if (part_of_multiple) |
112e8700 | 6219 | uiout->field_skip ("type"); |
269b11a2 | 6220 | else |
112e8700 | 6221 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6222 | |
6223 | /* 3 */ | |
6224 | annotate_field (2); | |
0d381245 | 6225 | if (part_of_multiple) |
112e8700 | 6226 | uiout->field_skip ("disp"); |
0d381245 | 6227 | else |
112e8700 | 6228 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6229 | |
c4093a6a JM |
6230 | |
6231 | /* 4 */ | |
6232 | annotate_field (3); | |
0d381245 | 6233 | if (part_of_multiple) |
112e8700 | 6234 | uiout->field_string ("enabled", loc->enabled ? "y" : "n"); |
0d381245 | 6235 | else |
112e8700 SM |
6236 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
6237 | uiout->spaces (2); | |
0d381245 | 6238 | |
c4093a6a JM |
6239 | |
6240 | /* 5 and 6 */ | |
3086aeae | 6241 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 6242 | { |
4a64f543 MS |
6243 | /* Although the print_one can possibly print all locations, |
6244 | calling it here is not likely to get any nice result. So, | |
6245 | make sure there's just one location. */ | |
0d381245 | 6246 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 6247 | b->ops->print_one (b, last_loc); |
0d381245 | 6248 | } |
3086aeae DJ |
6249 | else |
6250 | switch (b->type) | |
6251 | { | |
6252 | case bp_none: | |
6253 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 6254 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 6255 | break; |
c906108c | 6256 | |
3086aeae DJ |
6257 | case bp_watchpoint: |
6258 | case bp_hardware_watchpoint: | |
6259 | case bp_read_watchpoint: | |
6260 | case bp_access_watchpoint: | |
3a5c3e22 PA |
6261 | { |
6262 | struct watchpoint *w = (struct watchpoint *) b; | |
6263 | ||
6264 | /* Field 4, the address, is omitted (which makes the columns | |
6265 | not line up too nicely with the headers, but the effect | |
6266 | is relatively readable). */ | |
6267 | if (opts.addressprint) | |
112e8700 | 6268 | uiout->field_skip ("addr"); |
3a5c3e22 | 6269 | annotate_field (5); |
112e8700 | 6270 | uiout->field_string ("what", w->exp_string); |
3a5c3e22 | 6271 | } |
3086aeae DJ |
6272 | break; |
6273 | ||
3086aeae DJ |
6274 | case bp_breakpoint: |
6275 | case bp_hardware_breakpoint: | |
7c16b83e | 6276 | case bp_single_step: |
3086aeae DJ |
6277 | case bp_until: |
6278 | case bp_finish: | |
6279 | case bp_longjmp: | |
6280 | case bp_longjmp_resume: | |
e2e4d78b | 6281 | case bp_longjmp_call_dummy: |
186c406b TT |
6282 | case bp_exception: |
6283 | case bp_exception_resume: | |
3086aeae | 6284 | case bp_step_resume: |
2c03e5be | 6285 | case bp_hp_step_resume: |
3086aeae DJ |
6286 | case bp_watchpoint_scope: |
6287 | case bp_call_dummy: | |
aa7d318d | 6288 | case bp_std_terminate: |
3086aeae DJ |
6289 | case bp_shlib_event: |
6290 | case bp_thread_event: | |
6291 | case bp_overlay_event: | |
0fd8e87f | 6292 | case bp_longjmp_master: |
aa7d318d | 6293 | case bp_std_terminate_master: |
186c406b | 6294 | case bp_exception_master: |
1042e4c0 | 6295 | case bp_tracepoint: |
7a697b8d | 6296 | case bp_fast_tracepoint: |
0fb4aa4b | 6297 | case bp_static_tracepoint: |
e7e0cddf | 6298 | case bp_dprintf: |
4efc6507 | 6299 | case bp_jit_event: |
0e30163f JK |
6300 | case bp_gnu_ifunc_resolver: |
6301 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 6302 | if (opts.addressprint) |
3086aeae DJ |
6303 | { |
6304 | annotate_field (4); | |
54e52265 | 6305 | if (header_of_multiple) |
112e8700 | 6306 | uiout->field_string ("addr", "<MULTIPLE>"); |
e9bbd7c5 | 6307 | else if (b->loc == NULL || loc->shlib_disabled) |
112e8700 | 6308 | uiout->field_string ("addr", "<PENDING>"); |
0101ce28 | 6309 | else |
112e8700 | 6310 | uiout->field_core_addr ("addr", |
5af949e3 | 6311 | loc->gdbarch, loc->address); |
3086aeae DJ |
6312 | } |
6313 | annotate_field (5); | |
0d381245 | 6314 | if (!header_of_multiple) |
170b53b2 | 6315 | print_breakpoint_location (b, loc); |
0d381245 | 6316 | if (b->loc) |
a6d9a66e | 6317 | *last_loc = b->loc; |
3086aeae DJ |
6318 | break; |
6319 | } | |
c906108c | 6320 | |
6c95b8df | 6321 | |
998580f1 | 6322 | if (loc != NULL && !header_of_multiple) |
6c95b8df PA |
6323 | { |
6324 | struct inferior *inf; | |
998580f1 MK |
6325 | VEC(int) *inf_num = NULL; |
6326 | int mi_only = 1; | |
6c95b8df | 6327 | |
998580f1 | 6328 | ALL_INFERIORS (inf) |
6c95b8df PA |
6329 | { |
6330 | if (inf->pspace == loc->pspace) | |
998580f1 | 6331 | VEC_safe_push (int, inf_num, inf->num); |
6c95b8df | 6332 | } |
998580f1 MK |
6333 | |
6334 | /* For backward compatibility, don't display inferiors in CLI unless | |
6335 | there are several. Always display for MI. */ | |
6336 | if (allflag | |
6337 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6338 | && (number_of_program_spaces () > 1 | |
6339 | || number_of_inferiors () > 1) | |
6340 | /* LOC is for existing B, it cannot be in | |
6341 | moribund_locations and thus having NULL OWNER. */ | |
6342 | && loc->owner->type != bp_catchpoint)) | |
6343 | mi_only = 0; | |
6344 | output_thread_groups (uiout, "thread-groups", inf_num, mi_only); | |
6345 | VEC_free (int, inf_num); | |
6c95b8df PA |
6346 | } |
6347 | ||
4a306c9a | 6348 | if (!part_of_multiple) |
c4093a6a | 6349 | { |
4a306c9a JB |
6350 | if (b->thread != -1) |
6351 | { | |
6352 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6353 | "stop only in" line a little further down. */ |
112e8700 SM |
6354 | uiout->text (" thread "); |
6355 | uiout->field_int ("thread", b->thread); | |
4a306c9a JB |
6356 | } |
6357 | else if (b->task != 0) | |
6358 | { | |
112e8700 SM |
6359 | uiout->text (" task "); |
6360 | uiout->field_int ("task", b->task); | |
4a306c9a | 6361 | } |
c4093a6a | 6362 | } |
f1310107 | 6363 | |
112e8700 | 6364 | uiout->text ("\n"); |
f1310107 | 6365 | |
348d480f | 6366 | if (!part_of_multiple) |
f1310107 TJB |
6367 | b->ops->print_one_detail (b, uiout); |
6368 | ||
0d381245 | 6369 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6370 | { |
6371 | annotate_field (6); | |
112e8700 | 6372 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6373 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6374 | the frame ID. */ |
112e8700 | 6375 | uiout->field_core_addr ("frame", |
5af949e3 | 6376 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6377 | uiout->text ("\n"); |
c4093a6a JM |
6378 | } |
6379 | ||
28010a5d | 6380 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6381 | { |
6382 | annotate_field (7); | |
d77f58be | 6383 | if (is_tracepoint (b)) |
112e8700 | 6384 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6385 | else |
112e8700 SM |
6386 | uiout->text ("\tstop only if "); |
6387 | uiout->field_string ("cond", b->cond_string); | |
b775012e LM |
6388 | |
6389 | /* Print whether the target is doing the breakpoint's condition | |
6390 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6391 | if (is_breakpoint (b) | |
6392 | && breakpoint_condition_evaluation_mode () | |
6393 | == condition_evaluation_target) | |
6394 | { | |
112e8700 SM |
6395 | uiout->text (" ("); |
6396 | uiout->field_string ("evaluated-by", | |
b775012e | 6397 | bp_condition_evaluator (b)); |
112e8700 | 6398 | uiout->text (" evals)"); |
b775012e | 6399 | } |
112e8700 | 6400 | uiout->text ("\n"); |
0101ce28 JJ |
6401 | } |
6402 | ||
0d381245 | 6403 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6404 | { |
4a64f543 | 6405 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6406 | uiout->text ("\tstop only in thread "); |
6407 | if (uiout->is_mi_like_p ()) | |
6408 | uiout->field_int ("thread", b->thread); | |
5d5658a1 PA |
6409 | else |
6410 | { | |
6411 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6412 | ||
112e8700 | 6413 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6414 | } |
112e8700 | 6415 | uiout->text ("\n"); |
c4093a6a JM |
6416 | } |
6417 | ||
556ec64d YQ |
6418 | if (!part_of_multiple) |
6419 | { | |
6420 | if (b->hit_count) | |
31f56a27 YQ |
6421 | { |
6422 | /* FIXME should make an annotation for this. */ | |
6423 | if (is_catchpoint (b)) | |
112e8700 | 6424 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6425 | else if (is_tracepoint (b)) |
112e8700 | 6426 | uiout->text ("\ttracepoint"); |
31f56a27 | 6427 | else |
112e8700 SM |
6428 | uiout->text ("\tbreakpoint"); |
6429 | uiout->text (" already hit "); | |
6430 | uiout->field_int ("times", b->hit_count); | |
31f56a27 | 6431 | if (b->hit_count == 1) |
112e8700 | 6432 | uiout->text (" time\n"); |
31f56a27 | 6433 | else |
112e8700 | 6434 | uiout->text (" times\n"); |
31f56a27 | 6435 | } |
556ec64d YQ |
6436 | else |
6437 | { | |
31f56a27 | 6438 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 SM |
6439 | if (uiout->is_mi_like_p ()) |
6440 | uiout->field_int ("times", b->hit_count); | |
556ec64d YQ |
6441 | } |
6442 | } | |
8b93c638 | 6443 | |
0d381245 | 6444 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6445 | { |
6446 | annotate_field (8); | |
112e8700 SM |
6447 | uiout->text ("\tignore next "); |
6448 | uiout->field_int ("ignore", b->ignore_count); | |
6449 | uiout->text (" hits\n"); | |
c4093a6a | 6450 | } |
059fb39f | 6451 | |
816338b5 SS |
6452 | /* Note that an enable count of 1 corresponds to "enable once" |
6453 | behavior, which is reported by the combination of enablement and | |
6454 | disposition, so we don't need to mention it here. */ | |
6455 | if (!part_of_multiple && b->enable_count > 1) | |
6456 | { | |
6457 | annotate_field (8); | |
112e8700 | 6458 | uiout->text ("\tdisable after "); |
816338b5 SS |
6459 | /* Tweak the wording to clarify that ignore and enable counts |
6460 | are distinct, and have additive effect. */ | |
6461 | if (b->ignore_count) | |
112e8700 | 6462 | uiout->text ("additional "); |
816338b5 | 6463 | else |
112e8700 SM |
6464 | uiout->text ("next "); |
6465 | uiout->field_int ("enable", b->enable_count); | |
6466 | uiout->text (" hits\n"); | |
816338b5 SS |
6467 | } |
6468 | ||
f196051f SS |
6469 | if (!part_of_multiple && is_tracepoint (b)) |
6470 | { | |
6471 | struct tracepoint *tp = (struct tracepoint *) b; | |
6472 | ||
6473 | if (tp->traceframe_usage) | |
6474 | { | |
112e8700 SM |
6475 | uiout->text ("\ttrace buffer usage "); |
6476 | uiout->field_int ("traceframe-usage", tp->traceframe_usage); | |
6477 | uiout->text (" bytes\n"); | |
f196051f SS |
6478 | } |
6479 | } | |
d3ce09f5 | 6480 | |
d1b0a7bf | 6481 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6482 | if (!part_of_multiple && l) |
c4093a6a JM |
6483 | { |
6484 | annotate_field (9); | |
2e783024 | 6485 | ui_out_emit_tuple tuple_emitter (uiout, "script"); |
8b93c638 | 6486 | print_command_lines (uiout, l, 4); |
c4093a6a | 6487 | } |
d24317b4 | 6488 | |
d9b3f62e | 6489 | if (is_tracepoint (b)) |
1042e4c0 | 6490 | { |
d9b3f62e PA |
6491 | struct tracepoint *t = (struct tracepoint *) b; |
6492 | ||
6493 | if (!part_of_multiple && t->pass_count) | |
6494 | { | |
6495 | annotate_field (10); | |
112e8700 SM |
6496 | uiout->text ("\tpass count "); |
6497 | uiout->field_int ("pass", t->pass_count); | |
6498 | uiout->text (" \n"); | |
d9b3f62e | 6499 | } |
f2a8bc8a YQ |
6500 | |
6501 | /* Don't display it when tracepoint or tracepoint location is | |
6502 | pending. */ | |
6503 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6504 | { | |
6505 | annotate_field (11); | |
6506 | ||
112e8700 SM |
6507 | if (uiout->is_mi_like_p ()) |
6508 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6509 | loc->inserted ? "y" : "n"); |
6510 | else | |
6511 | { | |
6512 | if (loc->inserted) | |
112e8700 | 6513 | uiout->text ("\t"); |
f2a8bc8a | 6514 | else |
112e8700 SM |
6515 | uiout->text ("\tnot "); |
6516 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6517 | } |
6518 | } | |
1042e4c0 SS |
6519 | } |
6520 | ||
112e8700 | 6521 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6522 | { |
3a5c3e22 PA |
6523 | if (is_watchpoint (b)) |
6524 | { | |
6525 | struct watchpoint *w = (struct watchpoint *) b; | |
6526 | ||
112e8700 | 6527 | uiout->field_string ("original-location", w->exp_string); |
3a5c3e22 | 6528 | } |
f00aae0f | 6529 | else if (b->location != NULL |
d28cd78a | 6530 | && event_location_to_string (b->location.get ()) != NULL) |
112e8700 | 6531 | uiout->field_string ("original-location", |
d28cd78a | 6532 | event_location_to_string (b->location.get ())); |
d24317b4 | 6533 | } |
c4093a6a | 6534 | } |
c5aa993b | 6535 | |
0d381245 VP |
6536 | static void |
6537 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6538 | struct bp_location **last_loc, |
6c95b8df | 6539 | int allflag) |
0d381245 | 6540 | { |
79a45e25 | 6541 | struct ui_out *uiout = current_uiout; |
8d3788bd | 6542 | |
2e783024 TT |
6543 | { |
6544 | ui_out_emit_tuple tuple_emitter (uiout, "bkpt"); | |
8d3788bd | 6545 | |
2e783024 TT |
6546 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
6547 | } | |
0d381245 VP |
6548 | |
6549 | /* If this breakpoint has custom print function, | |
6550 | it's already printed. Otherwise, print individual | |
6551 | locations, if any. */ | |
6552 | if (b->ops == NULL || b->ops->print_one == NULL) | |
6553 | { | |
4a64f543 MS |
6554 | /* If breakpoint has a single location that is disabled, we |
6555 | print it as if it had several locations, since otherwise it's | |
6556 | hard to represent "breakpoint enabled, location disabled" | |
6557 | situation. | |
6558 | ||
6559 | Note that while hardware watchpoints have several locations | |
a3be7890 | 6560 | internally, that's not a property exposed to user. */ |
0d381245 | 6561 | if (b->loc |
a5606eee | 6562 | && !is_hardware_watchpoint (b) |
8d3788bd | 6563 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
6564 | { |
6565 | struct bp_location *loc; | |
6566 | int n = 1; | |
8d3788bd | 6567 | |
0d381245 | 6568 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd | 6569 | { |
2e783024 | 6570 | ui_out_emit_tuple tuple_emitter (uiout, NULL); |
8d3788bd | 6571 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); |
8d3788bd | 6572 | } |
0d381245 VP |
6573 | } |
6574 | } | |
6575 | } | |
6576 | ||
a6d9a66e UW |
6577 | static int |
6578 | breakpoint_address_bits (struct breakpoint *b) | |
6579 | { | |
6580 | int print_address_bits = 0; | |
6581 | struct bp_location *loc; | |
6582 | ||
c6d81124 PA |
6583 | /* Software watchpoints that aren't watching memory don't have an |
6584 | address to print. */ | |
6585 | if (is_no_memory_software_watchpoint (b)) | |
6586 | return 0; | |
6587 | ||
a6d9a66e UW |
6588 | for (loc = b->loc; loc; loc = loc->next) |
6589 | { | |
c7437ca6 PA |
6590 | int addr_bit; |
6591 | ||
c7437ca6 | 6592 | addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6593 | if (addr_bit > print_address_bits) |
6594 | print_address_bits = addr_bit; | |
6595 | } | |
6596 | ||
6597 | return print_address_bits; | |
6598 | } | |
0d381245 | 6599 | |
c4093a6a JM |
6600 | struct captured_breakpoint_query_args |
6601 | { | |
6602 | int bnum; | |
6603 | }; | |
c5aa993b | 6604 | |
c4093a6a | 6605 | static int |
2b65245e | 6606 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a | 6607 | { |
9a3c8263 SM |
6608 | struct captured_breakpoint_query_args *args |
6609 | = (struct captured_breakpoint_query_args *) data; | |
52f0bd74 | 6610 | struct breakpoint *b; |
a6d9a66e | 6611 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 6612 | |
c4093a6a JM |
6613 | ALL_BREAKPOINTS (b) |
6614 | { | |
6615 | if (args->bnum == b->number) | |
c5aa993b | 6616 | { |
12c5a436 | 6617 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6618 | return GDB_RC_OK; |
c5aa993b | 6619 | } |
c4093a6a JM |
6620 | } |
6621 | return GDB_RC_NONE; | |
6622 | } | |
c5aa993b | 6623 | |
c4093a6a | 6624 | enum gdb_rc |
4a64f543 MS |
6625 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, |
6626 | char **error_message) | |
c4093a6a JM |
6627 | { |
6628 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 6629 | |
c4093a6a JM |
6630 | args.bnum = bnum; |
6631 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4a64f543 | 6632 | an error. */ |
b0b13bb4 DJ |
6633 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
6634 | error_message, RETURN_MASK_ALL) < 0) | |
6635 | return GDB_RC_FAIL; | |
6636 | else | |
6637 | return GDB_RC_OK; | |
c4093a6a | 6638 | } |
c5aa993b | 6639 | |
09d682a4 TT |
6640 | /* Return true if this breakpoint was set by the user, false if it is |
6641 | internal or momentary. */ | |
6642 | ||
6643 | int | |
6644 | user_breakpoint_p (struct breakpoint *b) | |
6645 | { | |
46c6471b | 6646 | return b->number > 0; |
09d682a4 TT |
6647 | } |
6648 | ||
93daf339 TT |
6649 | /* See breakpoint.h. */ |
6650 | ||
6651 | int | |
6652 | pending_breakpoint_p (struct breakpoint *b) | |
6653 | { | |
6654 | return b->loc == NULL; | |
6655 | } | |
6656 | ||
7f3b0473 | 6657 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6658 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6659 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6660 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6661 | ones for which it returns non-zero. Return the total number of | |
6662 | breakpoints listed. */ | |
c906108c | 6663 | |
d77f58be | 6664 | static int |
4495129a | 6665 | breakpoint_1 (const char *args, int allflag, |
4a64f543 | 6666 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6667 | { |
52f0bd74 | 6668 | struct breakpoint *b; |
a6d9a66e | 6669 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6670 | int nr_printable_breakpoints; |
79a45b7d | 6671 | struct value_print_options opts; |
a6d9a66e | 6672 | int print_address_bits = 0; |
269b11a2 | 6673 | int print_type_col_width = 14; |
79a45e25 | 6674 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6675 | |
79a45b7d TT |
6676 | get_user_print_options (&opts); |
6677 | ||
4a64f543 MS |
6678 | /* Compute the number of rows in the table, as well as the size |
6679 | required for address fields. */ | |
7f3b0473 AC |
6680 | nr_printable_breakpoints = 0; |
6681 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6682 | { |
6683 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6684 | if (filter && !filter (b)) | |
6685 | continue; | |
6686 | ||
6687 | /* If we have an "args" string, it is a list of breakpoints to | |
6688 | accept. Skip the others. */ | |
6689 | if (args != NULL && *args != '\0') | |
6690 | { | |
6691 | if (allflag && parse_and_eval_long (args) != b->number) | |
6692 | continue; | |
6693 | if (!allflag && !number_is_in_list (args, b->number)) | |
6694 | continue; | |
6695 | } | |
269b11a2 | 6696 | |
e5a67952 MS |
6697 | if (allflag || user_breakpoint_p (b)) |
6698 | { | |
6699 | int addr_bit, type_len; | |
a6d9a66e | 6700 | |
e5a67952 MS |
6701 | addr_bit = breakpoint_address_bits (b); |
6702 | if (addr_bit > print_address_bits) | |
6703 | print_address_bits = addr_bit; | |
269b11a2 | 6704 | |
e5a67952 MS |
6705 | type_len = strlen (bptype_string (b->type)); |
6706 | if (type_len > print_type_col_width) | |
6707 | print_type_col_width = type_len; | |
6708 | ||
6709 | nr_printable_breakpoints++; | |
6710 | } | |
6711 | } | |
7f3b0473 | 6712 | |
4a2b031d TT |
6713 | { |
6714 | ui_out_emit_table table_emitter (uiout, | |
6715 | opts.addressprint ? 6 : 5, | |
6716 | nr_printable_breakpoints, | |
6717 | "BreakpointTable"); | |
6718 | ||
6719 | if (nr_printable_breakpoints > 0) | |
6720 | annotate_breakpoints_headers (); | |
6721 | if (nr_printable_breakpoints > 0) | |
6722 | annotate_field (0); | |
6723 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6724 | if (nr_printable_breakpoints > 0) | |
6725 | annotate_field (1); | |
6726 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6727 | if (nr_printable_breakpoints > 0) | |
6728 | annotate_field (2); | |
6729 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6730 | if (nr_printable_breakpoints > 0) | |
6731 | annotate_field (3); | |
6732 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6733 | if (opts.addressprint) | |
6734 | { | |
6735 | if (nr_printable_breakpoints > 0) | |
6736 | annotate_field (4); | |
6737 | if (print_address_bits <= 32) | |
6738 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6739 | else | |
6740 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6741 | } | |
6742 | if (nr_printable_breakpoints > 0) | |
6743 | annotate_field (5); | |
6744 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6745 | uiout->table_body (); | |
6746 | if (nr_printable_breakpoints > 0) | |
6747 | annotate_breakpoints_table (); | |
6748 | ||
6749 | ALL_BREAKPOINTS (b) | |
6750 | { | |
6751 | QUIT; | |
6752 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6753 | if (filter && !filter (b)) | |
6754 | continue; | |
e5a67952 | 6755 | |
4a2b031d TT |
6756 | /* If we have an "args" string, it is a list of breakpoints to |
6757 | accept. Skip the others. */ | |
e5a67952 | 6758 | |
4a2b031d TT |
6759 | if (args != NULL && *args != '\0') |
6760 | { | |
6761 | if (allflag) /* maintenance info breakpoint */ | |
6762 | { | |
6763 | if (parse_and_eval_long (args) != b->number) | |
6764 | continue; | |
6765 | } | |
6766 | else /* all others */ | |
6767 | { | |
6768 | if (!number_is_in_list (args, b->number)) | |
6769 | continue; | |
6770 | } | |
6771 | } | |
6772 | /* We only print out user settable breakpoints unless the | |
6773 | allflag is set. */ | |
6774 | if (allflag || user_breakpoint_p (b)) | |
6775 | print_one_breakpoint (b, &last_loc, allflag); | |
6776 | } | |
6777 | } | |
698384cd | 6778 | |
7f3b0473 | 6779 | if (nr_printable_breakpoints == 0) |
c906108c | 6780 | { |
4a64f543 MS |
6781 | /* If there's a filter, let the caller decide how to report |
6782 | empty list. */ | |
d77f58be SS |
6783 | if (!filter) |
6784 | { | |
e5a67952 | 6785 | if (args == NULL || *args == '\0') |
112e8700 | 6786 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6787 | else |
112e8700 | 6788 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
e5a67952 | 6789 | args); |
d77f58be | 6790 | } |
c906108c SS |
6791 | } |
6792 | else | |
c4093a6a | 6793 | { |
a6d9a66e UW |
6794 | if (last_loc && !server_command) |
6795 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6796 | } |
c906108c | 6797 | |
4a64f543 | 6798 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6799 | there have been breakpoints? */ |
c906108c | 6800 | annotate_breakpoints_table_end (); |
d77f58be SS |
6801 | |
6802 | return nr_printable_breakpoints; | |
c906108c SS |
6803 | } |
6804 | ||
ad443146 SS |
6805 | /* Display the value of default-collect in a way that is generally |
6806 | compatible with the breakpoint list. */ | |
6807 | ||
6808 | static void | |
6809 | default_collect_info (void) | |
6810 | { | |
79a45e25 PA |
6811 | struct ui_out *uiout = current_uiout; |
6812 | ||
ad443146 SS |
6813 | /* If it has no value (which is frequently the case), say nothing; a |
6814 | message like "No default-collect." gets in user's face when it's | |
6815 | not wanted. */ | |
6816 | if (!*default_collect) | |
6817 | return; | |
6818 | ||
6819 | /* The following phrase lines up nicely with per-tracepoint collect | |
6820 | actions. */ | |
112e8700 SM |
6821 | uiout->text ("default collect "); |
6822 | uiout->field_string ("default-collect", default_collect); | |
6823 | uiout->text (" \n"); | |
ad443146 SS |
6824 | } |
6825 | ||
c906108c | 6826 | static void |
11db9430 | 6827 | info_breakpoints_command (char *args, int from_tty) |
c906108c | 6828 | { |
e5a67952 | 6829 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6830 | |
6831 | default_collect_info (); | |
d77f58be SS |
6832 | } |
6833 | ||
6834 | static void | |
11db9430 | 6835 | info_watchpoints_command (char *args, int from_tty) |
d77f58be | 6836 | { |
e5a67952 | 6837 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6838 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6839 | |
6840 | if (num_printed == 0) | |
6841 | { | |
e5a67952 | 6842 | if (args == NULL || *args == '\0') |
112e8700 | 6843 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6844 | else |
112e8700 | 6845 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6846 | } |
c906108c SS |
6847 | } |
6848 | ||
7a292a7a | 6849 | static void |
4495129a | 6850 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6851 | { |
e5a67952 | 6852 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6853 | |
6854 | default_collect_info (); | |
c906108c SS |
6855 | } |
6856 | ||
0d381245 | 6857 | static int |
714835d5 | 6858 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6859 | struct program_space *pspace, |
714835d5 | 6860 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6861 | { |
6862 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6863 | |
0d381245 VP |
6864 | for (; bl; bl = bl->next) |
6865 | { | |
6c95b8df PA |
6866 | if (bl->pspace == pspace |
6867 | && bl->address == pc | |
0d381245 VP |
6868 | && (!overlay_debugging || bl->section == section)) |
6869 | return 1; | |
6870 | } | |
6871 | return 0; | |
6872 | } | |
6873 | ||
672f9b60 | 6874 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6875 | concerns with logical breakpoints, so we match program spaces, not |
6876 | address spaces. */ | |
c906108c SS |
6877 | |
6878 | static void | |
6c95b8df PA |
6879 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6880 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6881 | struct obj_section *section, int thread) |
c906108c | 6882 | { |
52f0bd74 AC |
6883 | int others = 0; |
6884 | struct breakpoint *b; | |
c906108c SS |
6885 | |
6886 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6887 | others += (user_breakpoint_p (b) |
6888 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6889 | if (others > 0) |
6890 | { | |
a3f17187 AC |
6891 | if (others == 1) |
6892 | printf_filtered (_("Note: breakpoint ")); | |
6893 | else /* if (others == ???) */ | |
6894 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6895 | ALL_BREAKPOINTS (b) |
672f9b60 | 6896 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6897 | { |
6898 | others--; | |
6899 | printf_filtered ("%d", b->number); | |
6900 | if (b->thread == -1 && thread != -1) | |
6901 | printf_filtered (" (all threads)"); | |
6902 | else if (b->thread != -1) | |
6903 | printf_filtered (" (thread %d)", b->thread); | |
6904 | printf_filtered ("%s%s ", | |
059fb39f | 6905 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6906 | || b->enable_state == bp_call_disabled) |
0d381245 | 6907 | ? " (disabled)" |
0d381245 VP |
6908 | : ""), |
6909 | (others > 1) ? "," | |
6910 | : ((others == 1) ? " and" : "")); | |
6911 | } | |
a3f17187 | 6912 | printf_filtered (_("also set at pc ")); |
5af949e3 | 6913 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
6914 | printf_filtered (".\n"); |
6915 | } | |
6916 | } | |
6917 | \f | |
c906108c | 6918 | |
e4f237da | 6919 | /* Return true iff it is meaningful to use the address member of |
244558af LM |
6920 | BPT locations. For some breakpoint types, the locations' address members |
6921 | are irrelevant and it makes no sense to attempt to compare them to other | |
6922 | addresses (or use them for any other purpose either). | |
e4f237da | 6923 | |
4a64f543 | 6924 | More specifically, each of the following breakpoint types will |
244558af | 6925 | always have a zero valued location address and we don't want to mark |
4a64f543 | 6926 | breakpoints of any of these types to be a duplicate of an actual |
244558af | 6927 | breakpoint location at address zero: |
e4f237da KB |
6928 | |
6929 | bp_watchpoint | |
2d134ed3 PA |
6930 | bp_catchpoint |
6931 | ||
6932 | */ | |
e4f237da KB |
6933 | |
6934 | static int | |
6935 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
6936 | { | |
6937 | enum bptype type = bpt->type; | |
6938 | ||
2d134ed3 PA |
6939 | return (type != bp_watchpoint && type != bp_catchpoint); |
6940 | } | |
6941 | ||
6942 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6943 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6944 | ||
6945 | static int | |
4a64f543 MS |
6946 | watchpoint_locations_match (struct bp_location *loc1, |
6947 | struct bp_location *loc2) | |
2d134ed3 | 6948 | { |
3a5c3e22 PA |
6949 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6950 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6951 | ||
6952 | /* Both of them must exist. */ | |
6953 | gdb_assert (w1 != NULL); | |
6954 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6955 | |
4a64f543 MS |
6956 | /* If the target can evaluate the condition expression in hardware, |
6957 | then we we need to insert both watchpoints even if they are at | |
6958 | the same place. Otherwise the watchpoint will only trigger when | |
6959 | the condition of whichever watchpoint was inserted evaluates to | |
6960 | true, not giving a chance for GDB to check the condition of the | |
6961 | other watchpoint. */ | |
3a5c3e22 | 6962 | if ((w1->cond_exp |
4a64f543 MS |
6963 | && target_can_accel_watchpoint_condition (loc1->address, |
6964 | loc1->length, | |
0cf6dd15 | 6965 | loc1->watchpoint_type, |
4d01a485 | 6966 | w1->cond_exp.get ())) |
3a5c3e22 | 6967 | || (w2->cond_exp |
4a64f543 MS |
6968 | && target_can_accel_watchpoint_condition (loc2->address, |
6969 | loc2->length, | |
0cf6dd15 | 6970 | loc2->watchpoint_type, |
4d01a485 | 6971 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6972 | return 0; |
6973 | ||
85d721b8 PA |
6974 | /* Note that this checks the owner's type, not the location's. In |
6975 | case the target does not support read watchpoints, but does | |
6976 | support access watchpoints, we'll have bp_read_watchpoint | |
6977 | watchpoints with hw_access locations. Those should be considered | |
6978 | duplicates of hw_read locations. The hw_read locations will | |
6979 | become hw_access locations later. */ | |
2d134ed3 PA |
6980 | return (loc1->owner->type == loc2->owner->type |
6981 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6982 | && loc1->address == loc2->address | |
6983 | && loc1->length == loc2->length); | |
e4f237da KB |
6984 | } |
6985 | ||
31e77af2 | 6986 | /* See breakpoint.h. */ |
6c95b8df | 6987 | |
31e77af2 | 6988 | int |
6c95b8df PA |
6989 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, |
6990 | struct address_space *aspace2, CORE_ADDR addr2) | |
6991 | { | |
f5656ead | 6992 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6993 | || aspace1 == aspace2) |
6994 | && addr1 == addr2); | |
6995 | } | |
6996 | ||
f1310107 TJB |
6997 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6998 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6999 | matches ASPACE2. On targets that have global breakpoints, the address | |
7000 | space doesn't really matter. */ | |
7001 | ||
7002 | static int | |
7003 | breakpoint_address_match_range (struct address_space *aspace1, CORE_ADDR addr1, | |
7004 | int len1, struct address_space *aspace2, | |
7005 | CORE_ADDR addr2) | |
7006 | { | |
f5656ead | 7007 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
7008 | || aspace1 == aspace2) |
7009 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
7010 | } | |
7011 | ||
7012 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
7013 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
7014 | matches the breakpoint's address space. On targets that have global | |
7015 | breakpoints, the address space doesn't really matter. */ | |
7016 | ||
7017 | static int | |
7018 | breakpoint_location_address_match (struct bp_location *bl, | |
7019 | struct address_space *aspace, | |
7020 | CORE_ADDR addr) | |
7021 | { | |
7022 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
7023 | aspace, addr) | |
7024 | || (bl->length | |
7025 | && breakpoint_address_match_range (bl->pspace->aspace, | |
7026 | bl->address, bl->length, | |
7027 | aspace, addr))); | |
7028 | } | |
7029 | ||
d35ae833 PA |
7030 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
7031 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
7032 | match happens only if ASPACE matches the breakpoint's address | |
7033 | space. On targets that have global breakpoints, the address space | |
7034 | doesn't really matter. */ | |
7035 | ||
7036 | static int | |
7037 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
7038 | struct address_space *aspace, | |
7039 | CORE_ADDR addr, int len) | |
7040 | { | |
7041 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
7042 | || bl->pspace->aspace == aspace) | |
7043 | { | |
7044 | int bl_len = bl->length != 0 ? bl->length : 1; | |
7045 | ||
7046 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
7047 | return 1; | |
7048 | } | |
7049 | return 0; | |
7050 | } | |
7051 | ||
1e4d1764 YQ |
7052 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
7053 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
7054 | true, otherwise returns false. */ | |
7055 | ||
7056 | static int | |
7057 | tracepoint_locations_match (struct bp_location *loc1, | |
7058 | struct bp_location *loc2) | |
7059 | { | |
7060 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
7061 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
7062 | locations at the same address of different tracepoints are regarded as | |
7063 | different locations. */ | |
7064 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
7065 | else | |
7066 | return 0; | |
7067 | } | |
7068 | ||
2d134ed3 PA |
7069 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
7070 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
7071 | represent the same location. */ | |
7072 | ||
7073 | static int | |
4a64f543 MS |
7074 | breakpoint_locations_match (struct bp_location *loc1, |
7075 | struct bp_location *loc2) | |
2d134ed3 | 7076 | { |
2bdf28a0 JK |
7077 | int hw_point1, hw_point2; |
7078 | ||
7079 | /* Both of them must not be in moribund_locations. */ | |
7080 | gdb_assert (loc1->owner != NULL); | |
7081 | gdb_assert (loc2->owner != NULL); | |
7082 | ||
7083 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
7084 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
7085 | |
7086 | if (hw_point1 != hw_point2) | |
7087 | return 0; | |
7088 | else if (hw_point1) | |
7089 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
7090 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
7091 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 7092 | else |
f1310107 TJB |
7093 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
7094 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
7095 | loc2->pspace->aspace, loc2->address) | |
7096 | && loc1->length == loc2->length); | |
2d134ed3 PA |
7097 | } |
7098 | ||
76897487 KB |
7099 | static void |
7100 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
7101 | int bnum, int have_bnum) | |
7102 | { | |
f63fbe86 MS |
7103 | /* The longest string possibly returned by hex_string_custom |
7104 | is 50 chars. These must be at least that big for safety. */ | |
7105 | char astr1[64]; | |
7106 | char astr2[64]; | |
76897487 | 7107 | |
bb599908 PH |
7108 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
7109 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 7110 | if (have_bnum) |
8a3fe4f8 | 7111 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
7112 | bnum, astr1, astr2); |
7113 | else | |
8a3fe4f8 | 7114 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
7115 | } |
7116 | ||
4a64f543 MS |
7117 | /* Adjust a breakpoint's address to account for architectural |
7118 | constraints on breakpoint placement. Return the adjusted address. | |
7119 | Note: Very few targets require this kind of adjustment. For most | |
7120 | targets, this function is simply the identity function. */ | |
76897487 KB |
7121 | |
7122 | static CORE_ADDR | |
a6d9a66e UW |
7123 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
7124 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 7125 | { |
a6d9a66e | 7126 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
7127 | { |
7128 | /* Very few targets need any kind of breakpoint adjustment. */ | |
7129 | return bpaddr; | |
7130 | } | |
88f7da05 KB |
7131 | else if (bptype == bp_watchpoint |
7132 | || bptype == bp_hardware_watchpoint | |
7133 | || bptype == bp_read_watchpoint | |
7134 | || bptype == bp_access_watchpoint | |
fe798b75 | 7135 | || bptype == bp_catchpoint) |
88f7da05 KB |
7136 | { |
7137 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
7138 | have their addresses modified. */ | |
7139 | return bpaddr; | |
7140 | } | |
7c16b83e PA |
7141 | else if (bptype == bp_single_step) |
7142 | { | |
7143 | /* Single-step breakpoints should not have their addresses | |
7144 | modified. If there's any architectural constrain that | |
7145 | applies to this address, then it should have already been | |
7146 | taken into account when the breakpoint was created in the | |
7147 | first place. If we didn't do this, stepping through e.g., | |
7148 | Thumb-2 IT blocks would break. */ | |
7149 | return bpaddr; | |
7150 | } | |
76897487 KB |
7151 | else |
7152 | { | |
7153 | CORE_ADDR adjusted_bpaddr; | |
7154 | ||
7155 | /* Some targets have architectural constraints on the placement | |
7156 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 7157 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
7158 | |
7159 | /* An adjusted breakpoint address can significantly alter | |
7160 | a user's expectations. Print a warning if an adjustment | |
7161 | is required. */ | |
7162 | if (adjusted_bpaddr != bpaddr) | |
7163 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
7164 | ||
7165 | return adjusted_bpaddr; | |
7166 | } | |
7167 | } | |
7168 | ||
5625a286 | 7169 | bp_location::bp_location (const bp_location_ops *ops, breakpoint *owner) |
7cc221ef | 7170 | { |
5625a286 | 7171 | bp_location *loc = this; |
7cc221ef | 7172 | |
348d480f PA |
7173 | gdb_assert (ops != NULL); |
7174 | ||
28010a5d PA |
7175 | loc->ops = ops; |
7176 | loc->owner = owner; | |
b775012e | 7177 | loc->cond_bytecode = NULL; |
0d381245 VP |
7178 | loc->shlib_disabled = 0; |
7179 | loc->enabled = 1; | |
e049a4b5 | 7180 | |
28010a5d | 7181 | switch (owner->type) |
e049a4b5 DJ |
7182 | { |
7183 | case bp_breakpoint: | |
7c16b83e | 7184 | case bp_single_step: |
e049a4b5 DJ |
7185 | case bp_until: |
7186 | case bp_finish: | |
7187 | case bp_longjmp: | |
7188 | case bp_longjmp_resume: | |
e2e4d78b | 7189 | case bp_longjmp_call_dummy: |
186c406b TT |
7190 | case bp_exception: |
7191 | case bp_exception_resume: | |
e049a4b5 | 7192 | case bp_step_resume: |
2c03e5be | 7193 | case bp_hp_step_resume: |
e049a4b5 DJ |
7194 | case bp_watchpoint_scope: |
7195 | case bp_call_dummy: | |
aa7d318d | 7196 | case bp_std_terminate: |
e049a4b5 DJ |
7197 | case bp_shlib_event: |
7198 | case bp_thread_event: | |
7199 | case bp_overlay_event: | |
4efc6507 | 7200 | case bp_jit_event: |
0fd8e87f | 7201 | case bp_longjmp_master: |
aa7d318d | 7202 | case bp_std_terminate_master: |
186c406b | 7203 | case bp_exception_master: |
0e30163f JK |
7204 | case bp_gnu_ifunc_resolver: |
7205 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7206 | case bp_dprintf: |
e049a4b5 | 7207 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 7208 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7209 | break; |
7210 | case bp_hardware_breakpoint: | |
7211 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 7212 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7213 | break; |
7214 | case bp_hardware_watchpoint: | |
7215 | case bp_read_watchpoint: | |
7216 | case bp_access_watchpoint: | |
7217 | loc->loc_type = bp_loc_hardware_watchpoint; | |
7218 | break; | |
7219 | case bp_watchpoint: | |
ce78b96d | 7220 | case bp_catchpoint: |
15c3d785 PA |
7221 | case bp_tracepoint: |
7222 | case bp_fast_tracepoint: | |
0fb4aa4b | 7223 | case bp_static_tracepoint: |
e049a4b5 DJ |
7224 | loc->loc_type = bp_loc_other; |
7225 | break; | |
7226 | default: | |
e2e0b3e5 | 7227 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
7228 | } |
7229 | ||
f431efe5 | 7230 | loc->refc = 1; |
28010a5d PA |
7231 | } |
7232 | ||
7233 | /* Allocate a struct bp_location. */ | |
7234 | ||
7235 | static struct bp_location * | |
7236 | allocate_bp_location (struct breakpoint *bpt) | |
7237 | { | |
348d480f PA |
7238 | return bpt->ops->allocate_location (bpt); |
7239 | } | |
7cc221ef | 7240 | |
f431efe5 PA |
7241 | static void |
7242 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 7243 | { |
348d480f | 7244 | loc->ops->dtor (loc); |
4d01a485 | 7245 | delete loc; |
fe3f5fa8 VP |
7246 | } |
7247 | ||
f431efe5 PA |
7248 | /* Increment reference count. */ |
7249 | ||
7250 | static void | |
7251 | incref_bp_location (struct bp_location *bl) | |
7252 | { | |
7253 | ++bl->refc; | |
7254 | } | |
7255 | ||
7256 | /* Decrement reference count. If the reference count reaches 0, | |
7257 | destroy the bp_location. Sets *BLP to NULL. */ | |
7258 | ||
7259 | static void | |
7260 | decref_bp_location (struct bp_location **blp) | |
7261 | { | |
0807b50c PA |
7262 | gdb_assert ((*blp)->refc > 0); |
7263 | ||
f431efe5 PA |
7264 | if (--(*blp)->refc == 0) |
7265 | free_bp_location (*blp); | |
7266 | *blp = NULL; | |
7267 | } | |
7268 | ||
346774a9 | 7269 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7270 | |
b270e6f9 TT |
7271 | static breakpoint * |
7272 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7273 | { |
346774a9 | 7274 | struct breakpoint *b1; |
b270e6f9 | 7275 | struct breakpoint *result = b.get (); |
c906108c | 7276 | |
346774a9 PA |
7277 | /* Add this breakpoint to the end of the chain so that a list of |
7278 | breakpoints will come out in order of increasing numbers. */ | |
7279 | ||
7280 | b1 = breakpoint_chain; | |
7281 | if (b1 == 0) | |
b270e6f9 | 7282 | breakpoint_chain = b.release (); |
346774a9 PA |
7283 | else |
7284 | { | |
7285 | while (b1->next) | |
7286 | b1 = b1->next; | |
b270e6f9 | 7287 | b1->next = b.release (); |
346774a9 | 7288 | } |
b270e6f9 TT |
7289 | |
7290 | return result; | |
346774a9 PA |
7291 | } |
7292 | ||
7293 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7294 | ||
7295 | static void | |
7296 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7297 | struct gdbarch *gdbarch, | |
28010a5d | 7298 | enum bptype bptype, |
c0a91b2b | 7299 | const struct breakpoint_ops *ops) |
346774a9 | 7300 | { |
348d480f PA |
7301 | gdb_assert (ops != NULL); |
7302 | ||
28010a5d | 7303 | b->ops = ops; |
4d28f7a8 | 7304 | b->type = bptype; |
a6d9a66e | 7305 | b->gdbarch = gdbarch; |
c906108c SS |
7306 | b->language = current_language->la_language; |
7307 | b->input_radix = input_radix; | |
d0fb5eae | 7308 | b->related_breakpoint = b; |
346774a9 PA |
7309 | } |
7310 | ||
7311 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7312 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7313 | |
7314 | static struct breakpoint * | |
7315 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7316 | enum bptype bptype, |
c0a91b2b | 7317 | const struct breakpoint_ops *ops) |
346774a9 | 7318 | { |
3b0871f4 | 7319 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7320 | |
3b0871f4 | 7321 | init_raw_breakpoint_without_location (b.get (), gdbarch, bptype, ops); |
b270e6f9 | 7322 | return add_to_breakpoint_chain (std::move (b)); |
0d381245 VP |
7323 | } |
7324 | ||
0e30163f JK |
7325 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
7326 | resolutions should be made as the user specified the location explicitly | |
7327 | enough. */ | |
7328 | ||
0d381245 | 7329 | static void |
0e30163f | 7330 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 7331 | { |
2bdf28a0 JK |
7332 | gdb_assert (loc->owner != NULL); |
7333 | ||
0d381245 | 7334 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7335 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7336 | || is_tracepoint (loc->owner)) |
0d381245 | 7337 | { |
0e30163f | 7338 | int is_gnu_ifunc; |
2c02bd72 | 7339 | const char *function_name; |
6a3a010b | 7340 | CORE_ADDR func_addr; |
0e30163f | 7341 | |
2c02bd72 | 7342 | find_pc_partial_function_gnu_ifunc (loc->address, &function_name, |
6a3a010b | 7343 | &func_addr, NULL, &is_gnu_ifunc); |
0e30163f JK |
7344 | |
7345 | if (is_gnu_ifunc && !explicit_loc) | |
7346 | { | |
7347 | struct breakpoint *b = loc->owner; | |
7348 | ||
7349 | gdb_assert (loc->pspace == current_program_space); | |
2c02bd72 | 7350 | if (gnu_ifunc_resolve_name (function_name, |
0e30163f JK |
7351 | &loc->requested_address)) |
7352 | { | |
7353 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
7354 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
7355 | loc->requested_address, | |
7356 | b->type); | |
7357 | } | |
7358 | else if (b->type == bp_breakpoint && b->loc == loc | |
7359 | && loc->next == NULL && b->related_breakpoint == b) | |
7360 | { | |
7361 | /* Create only the whole new breakpoint of this type but do not | |
7362 | mess more complicated breakpoints with multiple locations. */ | |
7363 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7364 | /* Remember the resolver's address for use by the return |
7365 | breakpoint. */ | |
7366 | loc->related_address = func_addr; | |
0e30163f JK |
7367 | } |
7368 | } | |
7369 | ||
2c02bd72 DE |
7370 | if (function_name) |
7371 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7372 | } |
7373 | } | |
7374 | ||
a6d9a66e | 7375 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7376 | struct gdbarch * |
a6d9a66e UW |
7377 | get_sal_arch (struct symtab_and_line sal) |
7378 | { | |
7379 | if (sal.section) | |
7380 | return get_objfile_arch (sal.section->objfile); | |
7381 | if (sal.symtab) | |
eb822aa6 | 7382 | return get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
a6d9a66e UW |
7383 | |
7384 | return NULL; | |
7385 | } | |
7386 | ||
346774a9 PA |
7387 | /* Low level routine for partially initializing a breakpoint of type |
7388 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7389 | file name, and line number are provided by SAL. |
0d381245 VP |
7390 | |
7391 | It is expected that the caller will complete the initialization of | |
7392 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7393 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7394 | |
346774a9 PA |
7395 | static void |
7396 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7397 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7398 | const struct breakpoint_ops *ops) |
0d381245 | 7399 | { |
28010a5d | 7400 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7401 | |
3742cc8b | 7402 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7403 | |
6c95b8df PA |
7404 | if (bptype != bp_catchpoint) |
7405 | gdb_assert (sal.pspace != NULL); | |
7406 | ||
f8eba3c6 TT |
7407 | /* Store the program space that was used to set the breakpoint, |
7408 | except for ordinary breakpoints, which are independent of the | |
7409 | program space. */ | |
7410 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7411 | b->pspace = sal.pspace; | |
346774a9 | 7412 | } |
c906108c | 7413 | |
346774a9 PA |
7414 | /* set_raw_breakpoint is a low level routine for allocating and |
7415 | partially initializing a breakpoint of type BPTYPE. The newly | |
7416 | created breakpoint's address, section, source file name, and line | |
7417 | number are provided by SAL. The newly created and partially | |
7418 | initialized breakpoint is added to the breakpoint chain and | |
7419 | is also returned as the value of this function. | |
7420 | ||
7421 | It is expected that the caller will complete the initialization of | |
7422 | the newly created breakpoint struct as well as output any status | |
7423 | information regarding the creation of a new breakpoint. In | |
7424 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7425 | number! Care should be taken to not allow an error to occur | |
7426 | prior to completing the initialization of the breakpoint. If this | |
7427 | should happen, a bogus breakpoint will be left on the chain. */ | |
7428 | ||
7429 | struct breakpoint * | |
7430 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7431 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7432 | const struct breakpoint_ops *ops) |
346774a9 | 7433 | { |
3b0871f4 | 7434 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7435 | |
3b0871f4 | 7436 | init_raw_breakpoint (b.get (), gdbarch, sal, bptype, ops); |
b270e6f9 | 7437 | return add_to_breakpoint_chain (std::move (b)); |
c906108c SS |
7438 | } |
7439 | ||
53a5351d | 7440 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7441 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7442 | initiated the operation. */ | |
c906108c SS |
7443 | |
7444 | void | |
186c406b | 7445 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7446 | { |
35df4500 | 7447 | struct breakpoint *b, *b_tmp; |
5d5658a1 | 7448 | int thread = tp->global_num; |
0fd8e87f UW |
7449 | |
7450 | /* To avoid having to rescan all objfile symbols at every step, | |
7451 | we maintain a list of continually-inserted but always disabled | |
7452 | longjmp "master" breakpoints. Here, we simply create momentary | |
7453 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7454 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7455 | if (b->pspace == current_program_space |
186c406b TT |
7456 | && (b->type == bp_longjmp_master |
7457 | || b->type == bp_exception_master)) | |
0fd8e87f | 7458 | { |
06edf0c0 PA |
7459 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7460 | struct breakpoint *clone; | |
cc59ec59 | 7461 | |
e2e4d78b JK |
7462 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7463 | after their removal. */ | |
06edf0c0 | 7464 | clone = momentary_breakpoint_from_master (b, type, |
c1fc2657 | 7465 | &momentary_breakpoint_ops, 1); |
0fd8e87f UW |
7466 | clone->thread = thread; |
7467 | } | |
186c406b TT |
7468 | |
7469 | tp->initiating_frame = frame; | |
c906108c SS |
7470 | } |
7471 | ||
611c83ae | 7472 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7473 | void |
611c83ae | 7474 | delete_longjmp_breakpoint (int thread) |
c906108c | 7475 | { |
35df4500 | 7476 | struct breakpoint *b, *b_tmp; |
c906108c | 7477 | |
35df4500 | 7478 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7479 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7480 | { |
7481 | if (b->thread == thread) | |
7482 | delete_breakpoint (b); | |
7483 | } | |
c906108c SS |
7484 | } |
7485 | ||
f59f708a PA |
7486 | void |
7487 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7488 | { | |
7489 | struct breakpoint *b, *b_tmp; | |
7490 | ||
7491 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7492 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7493 | { | |
7494 | if (b->thread == thread) | |
7495 | b->disposition = disp_del_at_next_stop; | |
7496 | } | |
7497 | } | |
7498 | ||
e2e4d78b JK |
7499 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7500 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7501 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7502 | breakpoints. */ | |
7503 | ||
7504 | struct breakpoint * | |
7505 | set_longjmp_breakpoint_for_call_dummy (void) | |
7506 | { | |
7507 | struct breakpoint *b, *retval = NULL; | |
7508 | ||
7509 | ALL_BREAKPOINTS (b) | |
7510 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7511 | { | |
7512 | struct breakpoint *new_b; | |
7513 | ||
7514 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7515 | &momentary_breakpoint_ops, |
7516 | 1); | |
5d5658a1 | 7517 | new_b->thread = ptid_to_global_thread_id (inferior_ptid); |
e2e4d78b JK |
7518 | |
7519 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7520 | ||
7521 | gdb_assert (new_b->related_breakpoint == new_b); | |
7522 | if (retval == NULL) | |
7523 | retval = new_b; | |
7524 | new_b->related_breakpoint = retval; | |
7525 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7526 | retval = retval->related_breakpoint; | |
7527 | retval->related_breakpoint = new_b; | |
7528 | } | |
7529 | ||
7530 | return retval; | |
7531 | } | |
7532 | ||
7533 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7534 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7535 | stack. |
7536 | ||
7537 | You should call this function only at places where it is safe to currently | |
7538 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7539 | frames. */ | |
7540 | ||
7541 | void | |
b67a2c6f | 7542 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7543 | { |
7544 | struct breakpoint *b, *b_tmp; | |
7545 | ||
7546 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7547 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7548 | { |
7549 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7550 | ||
7551 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7552 | dummy_b = dummy_b->related_breakpoint; | |
7553 | if (dummy_b->type != bp_call_dummy | |
7554 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7555 | continue; | |
7556 | ||
b67a2c6f | 7557 | dummy_frame_discard (dummy_b->frame_id, tp->ptid); |
e2e4d78b JK |
7558 | |
7559 | while (b->related_breakpoint != b) | |
7560 | { | |
7561 | if (b_tmp == b->related_breakpoint) | |
7562 | b_tmp = b->related_breakpoint->next; | |
7563 | delete_breakpoint (b->related_breakpoint); | |
7564 | } | |
7565 | delete_breakpoint (b); | |
7566 | } | |
7567 | } | |
7568 | ||
1900040c MS |
7569 | void |
7570 | enable_overlay_breakpoints (void) | |
7571 | { | |
52f0bd74 | 7572 | struct breakpoint *b; |
1900040c MS |
7573 | |
7574 | ALL_BREAKPOINTS (b) | |
7575 | if (b->type == bp_overlay_event) | |
7576 | { | |
7577 | b->enable_state = bp_enabled; | |
44702360 | 7578 | update_global_location_list (UGLL_MAY_INSERT); |
c02f5703 | 7579 | overlay_events_enabled = 1; |
1900040c MS |
7580 | } |
7581 | } | |
7582 | ||
7583 | void | |
7584 | disable_overlay_breakpoints (void) | |
7585 | { | |
52f0bd74 | 7586 | struct breakpoint *b; |
1900040c MS |
7587 | |
7588 | ALL_BREAKPOINTS (b) | |
7589 | if (b->type == bp_overlay_event) | |
7590 | { | |
7591 | b->enable_state = bp_disabled; | |
44702360 | 7592 | update_global_location_list (UGLL_DONT_INSERT); |
c02f5703 | 7593 | overlay_events_enabled = 0; |
1900040c MS |
7594 | } |
7595 | } | |
7596 | ||
aa7d318d TT |
7597 | /* Set an active std::terminate breakpoint for each std::terminate |
7598 | master breakpoint. */ | |
7599 | void | |
7600 | set_std_terminate_breakpoint (void) | |
7601 | { | |
35df4500 | 7602 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7603 | |
35df4500 | 7604 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7605 | if (b->pspace == current_program_space |
7606 | && b->type == bp_std_terminate_master) | |
7607 | { | |
06edf0c0 | 7608 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7609 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7610 | } |
7611 | } | |
7612 | ||
7613 | /* Delete all the std::terminate breakpoints. */ | |
7614 | void | |
7615 | delete_std_terminate_breakpoint (void) | |
7616 | { | |
35df4500 | 7617 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7618 | |
35df4500 | 7619 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7620 | if (b->type == bp_std_terminate) |
7621 | delete_breakpoint (b); | |
7622 | } | |
7623 | ||
c4093a6a | 7624 | struct breakpoint * |
a6d9a66e | 7625 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7626 | { |
7627 | struct breakpoint *b; | |
c4093a6a | 7628 | |
06edf0c0 PA |
7629 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7630 | &internal_breakpoint_ops); | |
7631 | ||
b5de0fa7 | 7632 | b->enable_state = bp_enabled; |
f00aae0f | 7633 | /* location has to be used or breakpoint_re_set will delete me. */ |
d28cd78a | 7634 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7635 | |
44702360 | 7636 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7637 | |
c4093a6a JM |
7638 | return b; |
7639 | } | |
7640 | ||
0101ce28 JJ |
7641 | struct lang_and_radix |
7642 | { | |
7643 | enum language lang; | |
7644 | int radix; | |
7645 | }; | |
7646 | ||
4efc6507 DE |
7647 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7648 | ||
7649 | struct breakpoint * | |
7650 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7651 | { | |
2a7f3dff PA |
7652 | return create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7653 | &internal_breakpoint_ops); | |
4efc6507 | 7654 | } |
0101ce28 | 7655 | |
03673fc7 PP |
7656 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7657 | ||
7658 | void | |
7659 | remove_jit_event_breakpoints (void) | |
7660 | { | |
7661 | struct breakpoint *b, *b_tmp; | |
7662 | ||
7663 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7664 | if (b->type == bp_jit_event | |
7665 | && b->loc->pspace == current_program_space) | |
7666 | delete_breakpoint (b); | |
7667 | } | |
7668 | ||
cae688ec JJ |
7669 | void |
7670 | remove_solib_event_breakpoints (void) | |
7671 | { | |
35df4500 | 7672 | struct breakpoint *b, *b_tmp; |
cae688ec | 7673 | |
35df4500 | 7674 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7675 | if (b->type == bp_shlib_event |
7676 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7677 | delete_breakpoint (b); |
7678 | } | |
7679 | ||
f37f681c PA |
7680 | /* See breakpoint.h. */ |
7681 | ||
7682 | void | |
7683 | remove_solib_event_breakpoints_at_next_stop (void) | |
7684 | { | |
7685 | struct breakpoint *b, *b_tmp; | |
7686 | ||
7687 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7688 | if (b->type == bp_shlib_event | |
7689 | && b->loc->pspace == current_program_space) | |
7690 | b->disposition = disp_del_at_next_stop; | |
7691 | } | |
7692 | ||
04086b45 PA |
7693 | /* Helper for create_solib_event_breakpoint / |
7694 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7695 | INSERT_MODE to pass through to update_global_location_list. */ | |
7696 | ||
7697 | static struct breakpoint * | |
7698 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7699 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7700 | { |
7701 | struct breakpoint *b; | |
7702 | ||
06edf0c0 PA |
7703 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7704 | &internal_breakpoint_ops); | |
04086b45 | 7705 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7706 | return b; |
7707 | } | |
7708 | ||
04086b45 PA |
7709 | struct breakpoint * |
7710 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7711 | { | |
7712 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7713 | } | |
7714 | ||
f37f681c PA |
7715 | /* See breakpoint.h. */ |
7716 | ||
7717 | struct breakpoint * | |
7718 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7719 | { | |
7720 | struct breakpoint *b; | |
7721 | ||
04086b45 PA |
7722 | /* Explicitly tell update_global_location_list to insert |
7723 | locations. */ | |
7724 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7725 | if (!b->loc->inserted) |
7726 | { | |
7727 | delete_breakpoint (b); | |
7728 | return NULL; | |
7729 | } | |
7730 | return b; | |
7731 | } | |
7732 | ||
cae688ec JJ |
7733 | /* Disable any breakpoints that are on code in shared libraries. Only |
7734 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7735 | ||
7736 | void | |
cb851954 | 7737 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7738 | { |
876fa593 | 7739 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7740 | |
876fa593 | 7741 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7742 | { |
2bdf28a0 | 7743 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7744 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7745 | |
4a64f543 MS |
7746 | /* We apply the check to all breakpoints, including disabled for |
7747 | those with loc->duplicate set. This is so that when breakpoint | |
7748 | becomes enabled, or the duplicate is removed, gdb will try to | |
7749 | insert all breakpoints. If we don't set shlib_disabled here, | |
7750 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7751 | if (((b->type == bp_breakpoint) |
508ccb1f | 7752 | || (b->type == bp_jit_event) |
1042e4c0 | 7753 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7754 | || (is_tracepoint (b))) |
6c95b8df | 7755 | && loc->pspace == current_program_space |
0d381245 | 7756 | && !loc->shlib_disabled |
6c95b8df | 7757 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7758 | ) |
0d381245 VP |
7759 | { |
7760 | loc->shlib_disabled = 1; | |
7761 | } | |
cae688ec JJ |
7762 | } |
7763 | } | |
7764 | ||
63644780 NB |
7765 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7766 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7767 | disabled ones can just stay disabled. */ | |
84acb35a | 7768 | |
75149521 | 7769 | static void |
84acb35a JJ |
7770 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7771 | { | |
876fa593 | 7772 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7773 | int disabled_shlib_breaks = 0; |
7774 | ||
876fa593 | 7775 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7776 | { |
2bdf28a0 | 7777 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7778 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7779 | |
1e4d1764 | 7780 | if (solib->pspace == loc->pspace |
e2dd7057 | 7781 | && !loc->shlib_disabled |
1e4d1764 YQ |
7782 | && (((b->type == bp_breakpoint |
7783 | || b->type == bp_jit_event | |
7784 | || b->type == bp_hardware_breakpoint) | |
7785 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7786 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7787 | || is_tracepoint (b)) | |
e2dd7057 | 7788 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7789 | { |
e2dd7057 PP |
7790 | loc->shlib_disabled = 1; |
7791 | /* At this point, we cannot rely on remove_breakpoint | |
7792 | succeeding so we must mark the breakpoint as not inserted | |
7793 | to prevent future errors occurring in remove_breakpoints. */ | |
7794 | loc->inserted = 0; | |
8d3788bd VP |
7795 | |
7796 | /* This may cause duplicate notifications for the same breakpoint. */ | |
7797 | observer_notify_breakpoint_modified (b); | |
7798 | ||
e2dd7057 PP |
7799 | if (!disabled_shlib_breaks) |
7800 | { | |
223ffa71 | 7801 | target_terminal::ours_for_output (); |
3e43a32a MS |
7802 | warning (_("Temporarily disabling breakpoints " |
7803 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7804 | solib->so_name); |
84acb35a | 7805 | } |
e2dd7057 | 7806 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7807 | } |
7808 | } | |
84acb35a JJ |
7809 | } |
7810 | ||
63644780 NB |
7811 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7812 | notification of free_objfile. Only apply to enabled breakpoints, | |
7813 | disabled ones can just stay disabled. */ | |
7814 | ||
7815 | static void | |
7816 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7817 | { | |
7818 | struct breakpoint *b; | |
7819 | ||
7820 | if (objfile == NULL) | |
7821 | return; | |
7822 | ||
d03de421 PA |
7823 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7824 | managed by the user with add-symbol-file/remove-symbol-file. | |
7825 | Similarly to how breakpoints in shared libraries are handled in | |
7826 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7827 | shlib_disabled so they end up uninserted on the next global |
7828 | location list update. Shared libraries not loaded by the user | |
7829 | aren't handled here -- they're already handled in | |
7830 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7831 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7832 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7833 | main objfile). */ | |
7834 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7835 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7836 | return; |
7837 | ||
7838 | ALL_BREAKPOINTS (b) | |
7839 | { | |
7840 | struct bp_location *loc; | |
7841 | int bp_modified = 0; | |
7842 | ||
7843 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7844 | continue; | |
7845 | ||
7846 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
7847 | { | |
7848 | CORE_ADDR loc_addr = loc->address; | |
7849 | ||
7850 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7851 | && loc->loc_type != bp_loc_software_breakpoint) | |
7852 | continue; | |
7853 | ||
7854 | if (loc->shlib_disabled != 0) | |
7855 | continue; | |
7856 | ||
7857 | if (objfile->pspace != loc->pspace) | |
7858 | continue; | |
7859 | ||
7860 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7861 | && loc->loc_type != bp_loc_software_breakpoint) | |
7862 | continue; | |
7863 | ||
7864 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7865 | { | |
7866 | loc->shlib_disabled = 1; | |
08351840 PA |
7867 | /* At this point, we don't know whether the object was |
7868 | unmapped from the inferior or not, so leave the | |
7869 | inserted flag alone. We'll handle failure to | |
7870 | uninsert quietly, in case the object was indeed | |
7871 | unmapped. */ | |
63644780 NB |
7872 | |
7873 | mark_breakpoint_location_modified (loc); | |
7874 | ||
7875 | bp_modified = 1; | |
7876 | } | |
7877 | } | |
7878 | ||
7879 | if (bp_modified) | |
7880 | observer_notify_breakpoint_modified (b); | |
7881 | } | |
7882 | } | |
7883 | ||
ce78b96d JB |
7884 | /* FORK & VFORK catchpoints. */ |
7885 | ||
e29a4733 | 7886 | /* An instance of this type is used to represent a fork or vfork |
c1fc2657 SM |
7887 | catchpoint. A breakpoint is really of this type iff its ops pointer points |
7888 | to CATCH_FORK_BREAKPOINT_OPS. */ | |
e29a4733 | 7889 | |
c1fc2657 | 7890 | struct fork_catchpoint : public breakpoint |
e29a4733 | 7891 | { |
e29a4733 PA |
7892 | /* Process id of a child process whose forking triggered this |
7893 | catchpoint. This field is only valid immediately after this | |
7894 | catchpoint has triggered. */ | |
7895 | ptid_t forked_inferior_pid; | |
7896 | }; | |
7897 | ||
4a64f543 MS |
7898 | /* Implement the "insert" breakpoint_ops method for fork |
7899 | catchpoints. */ | |
ce78b96d | 7900 | |
77b06cd7 TJB |
7901 | static int |
7902 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7903 | { |
dfd4cc63 | 7904 | return target_insert_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7905 | } |
7906 | ||
4a64f543 MS |
7907 | /* Implement the "remove" breakpoint_ops method for fork |
7908 | catchpoints. */ | |
ce78b96d JB |
7909 | |
7910 | static int | |
73971819 | 7911 | remove_catch_fork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7912 | { |
dfd4cc63 | 7913 | return target_remove_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7914 | } |
7915 | ||
7916 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7917 | catchpoints. */ | |
7918 | ||
7919 | static int | |
f1310107 | 7920 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
09ac7c10 TT |
7921 | struct address_space *aspace, CORE_ADDR bp_addr, |
7922 | const struct target_waitstatus *ws) | |
ce78b96d | 7923 | { |
e29a4733 PA |
7924 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7925 | ||
f90263c1 TT |
7926 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7927 | return 0; | |
7928 | ||
7929 | c->forked_inferior_pid = ws->value.related_pid; | |
7930 | return 1; | |
ce78b96d JB |
7931 | } |
7932 | ||
4a64f543 MS |
7933 | /* Implement the "print_it" breakpoint_ops method for fork |
7934 | catchpoints. */ | |
ce78b96d JB |
7935 | |
7936 | static enum print_stop_action | |
348d480f | 7937 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7938 | { |
36dfb11c | 7939 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7940 | struct breakpoint *b = bs->breakpoint_at; |
7941 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7942 | |
ce78b96d | 7943 | annotate_catchpoint (b->number); |
f303dbd6 | 7944 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7945 | if (b->disposition == disp_del) |
112e8700 | 7946 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7947 | else |
112e8700 SM |
7948 | uiout->text ("Catchpoint "); |
7949 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7950 | { |
112e8700 SM |
7951 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_FORK)); |
7952 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7953 | } |
112e8700 SM |
7954 | uiout->field_int ("bkptno", b->number); |
7955 | uiout->text (" (forked process "); | |
7956 | uiout->field_int ("newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7957 | uiout->text ("), "); | |
ce78b96d JB |
7958 | return PRINT_SRC_AND_LOC; |
7959 | } | |
7960 | ||
4a64f543 MS |
7961 | /* Implement the "print_one" breakpoint_ops method for fork |
7962 | catchpoints. */ | |
ce78b96d JB |
7963 | |
7964 | static void | |
a6d9a66e | 7965 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7966 | { |
e29a4733 | 7967 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7968 | struct value_print_options opts; |
79a45e25 | 7969 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7970 | |
7971 | get_user_print_options (&opts); | |
7972 | ||
4a64f543 MS |
7973 | /* Field 4, the address, is omitted (which makes the columns not |
7974 | line up too nicely with the headers, but the effect is relatively | |
7975 | readable). */ | |
79a45b7d | 7976 | if (opts.addressprint) |
112e8700 | 7977 | uiout->field_skip ("addr"); |
ce78b96d | 7978 | annotate_field (5); |
112e8700 | 7979 | uiout->text ("fork"); |
e29a4733 | 7980 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d | 7981 | { |
112e8700 SM |
7982 | uiout->text (", process "); |
7983 | uiout->field_int ("what", ptid_get_pid (c->forked_inferior_pid)); | |
7984 | uiout->spaces (1); | |
ce78b96d | 7985 | } |
8ac3646f | 7986 | |
112e8700 SM |
7987 | if (uiout->is_mi_like_p ()) |
7988 | uiout->field_string ("catch-type", "fork"); | |
ce78b96d JB |
7989 | } |
7990 | ||
7991 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7992 | catchpoints. */ | |
7993 | ||
7994 | static void | |
7995 | print_mention_catch_fork (struct breakpoint *b) | |
7996 | { | |
7997 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7998 | } | |
7999 | ||
6149aea9 PA |
8000 | /* Implement the "print_recreate" breakpoint_ops method for fork |
8001 | catchpoints. */ | |
8002 | ||
8003 | static void | |
8004 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
8005 | { | |
8006 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 8007 | print_recreate_thread (b, fp); |
6149aea9 PA |
8008 | } |
8009 | ||
ce78b96d JB |
8010 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
8011 | ||
2060206e | 8012 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 8013 | |
4a64f543 MS |
8014 | /* Implement the "insert" breakpoint_ops method for vfork |
8015 | catchpoints. */ | |
ce78b96d | 8016 | |
77b06cd7 TJB |
8017 | static int |
8018 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 8019 | { |
dfd4cc63 | 8020 | return target_insert_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
8021 | } |
8022 | ||
4a64f543 MS |
8023 | /* Implement the "remove" breakpoint_ops method for vfork |
8024 | catchpoints. */ | |
ce78b96d JB |
8025 | |
8026 | static int | |
73971819 | 8027 | remove_catch_vfork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 8028 | { |
dfd4cc63 | 8029 | return target_remove_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
8030 | } |
8031 | ||
8032 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
8033 | catchpoints. */ | |
8034 | ||
8035 | static int | |
f1310107 | 8036 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
09ac7c10 TT |
8037 | struct address_space *aspace, CORE_ADDR bp_addr, |
8038 | const struct target_waitstatus *ws) | |
ce78b96d | 8039 | { |
e29a4733 PA |
8040 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
8041 | ||
f90263c1 TT |
8042 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
8043 | return 0; | |
8044 | ||
8045 | c->forked_inferior_pid = ws->value.related_pid; | |
8046 | return 1; | |
ce78b96d JB |
8047 | } |
8048 | ||
4a64f543 MS |
8049 | /* Implement the "print_it" breakpoint_ops method for vfork |
8050 | catchpoints. */ | |
ce78b96d JB |
8051 | |
8052 | static enum print_stop_action | |
348d480f | 8053 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 8054 | { |
36dfb11c | 8055 | struct ui_out *uiout = current_uiout; |
348d480f | 8056 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
8057 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
8058 | ||
ce78b96d | 8059 | annotate_catchpoint (b->number); |
f303dbd6 | 8060 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8061 | if (b->disposition == disp_del) |
112e8700 | 8062 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 8063 | else |
112e8700 SM |
8064 | uiout->text ("Catchpoint "); |
8065 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 8066 | { |
112e8700 SM |
8067 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_VFORK)); |
8068 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 8069 | } |
112e8700 SM |
8070 | uiout->field_int ("bkptno", b->number); |
8071 | uiout->text (" (vforked process "); | |
8072 | uiout->field_int ("newpid", ptid_get_pid (c->forked_inferior_pid)); | |
8073 | uiout->text ("), "); | |
ce78b96d JB |
8074 | return PRINT_SRC_AND_LOC; |
8075 | } | |
8076 | ||
4a64f543 MS |
8077 | /* Implement the "print_one" breakpoint_ops method for vfork |
8078 | catchpoints. */ | |
ce78b96d JB |
8079 | |
8080 | static void | |
a6d9a66e | 8081 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 8082 | { |
e29a4733 | 8083 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 8084 | struct value_print_options opts; |
79a45e25 | 8085 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
8086 | |
8087 | get_user_print_options (&opts); | |
4a64f543 MS |
8088 | /* Field 4, the address, is omitted (which makes the columns not |
8089 | line up too nicely with the headers, but the effect is relatively | |
8090 | readable). */ | |
79a45b7d | 8091 | if (opts.addressprint) |
112e8700 | 8092 | uiout->field_skip ("addr"); |
ce78b96d | 8093 | annotate_field (5); |
112e8700 | 8094 | uiout->text ("vfork"); |
e29a4733 | 8095 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d | 8096 | { |
112e8700 SM |
8097 | uiout->text (", process "); |
8098 | uiout->field_int ("what", ptid_get_pid (c->forked_inferior_pid)); | |
8099 | uiout->spaces (1); | |
ce78b96d | 8100 | } |
8ac3646f | 8101 | |
112e8700 SM |
8102 | if (uiout->is_mi_like_p ()) |
8103 | uiout->field_string ("catch-type", "vfork"); | |
ce78b96d JB |
8104 | } |
8105 | ||
8106 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
8107 | catchpoints. */ | |
8108 | ||
8109 | static void | |
8110 | print_mention_catch_vfork (struct breakpoint *b) | |
8111 | { | |
8112 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
8113 | } | |
8114 | ||
6149aea9 PA |
8115 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
8116 | catchpoints. */ | |
8117 | ||
8118 | static void | |
8119 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
8120 | { | |
8121 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 8122 | print_recreate_thread (b, fp); |
6149aea9 PA |
8123 | } |
8124 | ||
ce78b96d JB |
8125 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
8126 | ||
2060206e | 8127 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 8128 | |
edcc5120 | 8129 | /* An instance of this type is used to represent an solib catchpoint. |
c1fc2657 | 8130 | A breakpoint is really of this type iff its ops pointer points to |
edcc5120 TT |
8131 | CATCH_SOLIB_BREAKPOINT_OPS. */ |
8132 | ||
c1fc2657 | 8133 | struct solib_catchpoint : public breakpoint |
edcc5120 | 8134 | { |
c1fc2657 | 8135 | ~solib_catchpoint () override; |
edcc5120 TT |
8136 | |
8137 | /* True for "catch load", false for "catch unload". */ | |
8138 | unsigned char is_load; | |
8139 | ||
8140 | /* Regular expression to match, if any. COMPILED is only valid when | |
8141 | REGEX is non-NULL. */ | |
8142 | char *regex; | |
2d7cc5c7 | 8143 | std::unique_ptr<compiled_regex> compiled; |
edcc5120 TT |
8144 | }; |
8145 | ||
c1fc2657 | 8146 | solib_catchpoint::~solib_catchpoint () |
edcc5120 | 8147 | { |
c1fc2657 | 8148 | xfree (this->regex); |
edcc5120 TT |
8149 | } |
8150 | ||
8151 | static int | |
8152 | insert_catch_solib (struct bp_location *ignore) | |
8153 | { | |
8154 | return 0; | |
8155 | } | |
8156 | ||
8157 | static int | |
73971819 | 8158 | remove_catch_solib (struct bp_location *ignore, enum remove_bp_reason reason) |
edcc5120 TT |
8159 | { |
8160 | return 0; | |
8161 | } | |
8162 | ||
8163 | static int | |
8164 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
8165 | struct address_space *aspace, | |
8166 | CORE_ADDR bp_addr, | |
8167 | const struct target_waitstatus *ws) | |
8168 | { | |
8169 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
8170 | struct breakpoint *other; | |
8171 | ||
8172 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
8173 | return 1; | |
8174 | ||
8175 | ALL_BREAKPOINTS (other) | |
8176 | { | |
8177 | struct bp_location *other_bl; | |
8178 | ||
8179 | if (other == bl->owner) | |
8180 | continue; | |
8181 | ||
8182 | if (other->type != bp_shlib_event) | |
8183 | continue; | |
8184 | ||
c1fc2657 | 8185 | if (self->pspace != NULL && other->pspace != self->pspace) |
edcc5120 TT |
8186 | continue; |
8187 | ||
8188 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
8189 | { | |
8190 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
8191 | return 1; | |
8192 | } | |
8193 | } | |
8194 | ||
8195 | return 0; | |
8196 | } | |
8197 | ||
8198 | static void | |
8199 | check_status_catch_solib (struct bpstats *bs) | |
8200 | { | |
8201 | struct solib_catchpoint *self | |
8202 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
8203 | int ix; | |
8204 | ||
8205 | if (self->is_load) | |
8206 | { | |
8207 | struct so_list *iter; | |
8208 | ||
8209 | for (ix = 0; | |
8210 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
8211 | ix, iter); | |
8212 | ++ix) | |
8213 | { | |
8214 | if (!self->regex | |
2d7cc5c7 | 8215 | || self->compiled->exec (iter->so_name, 0, NULL, 0) == 0) |
edcc5120 TT |
8216 | return; |
8217 | } | |
8218 | } | |
8219 | else | |
8220 | { | |
8221 | char *iter; | |
8222 | ||
8223 | for (ix = 0; | |
8224 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
8225 | ix, iter); | |
8226 | ++ix) | |
8227 | { | |
8228 | if (!self->regex | |
2d7cc5c7 | 8229 | || self->compiled->exec (iter, 0, NULL, 0) == 0) |
edcc5120 TT |
8230 | return; |
8231 | } | |
8232 | } | |
8233 | ||
8234 | bs->stop = 0; | |
8235 | bs->print_it = print_it_noop; | |
8236 | } | |
8237 | ||
8238 | static enum print_stop_action | |
8239 | print_it_catch_solib (bpstat bs) | |
8240 | { | |
8241 | struct breakpoint *b = bs->breakpoint_at; | |
8242 | struct ui_out *uiout = current_uiout; | |
8243 | ||
8244 | annotate_catchpoint (b->number); | |
f303dbd6 | 8245 | maybe_print_thread_hit_breakpoint (uiout); |
edcc5120 | 8246 | if (b->disposition == disp_del) |
112e8700 | 8247 | uiout->text ("Temporary catchpoint "); |
edcc5120 | 8248 | else |
112e8700 SM |
8249 | uiout->text ("Catchpoint "); |
8250 | uiout->field_int ("bkptno", b->number); | |
8251 | uiout->text ("\n"); | |
8252 | if (uiout->is_mi_like_p ()) | |
8253 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
edcc5120 TT |
8254 | print_solib_event (1); |
8255 | return PRINT_SRC_AND_LOC; | |
8256 | } | |
8257 | ||
8258 | static void | |
8259 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
8260 | { | |
8261 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8262 | struct value_print_options opts; | |
8263 | struct ui_out *uiout = current_uiout; | |
8264 | char *msg; | |
8265 | ||
8266 | get_user_print_options (&opts); | |
8267 | /* Field 4, the address, is omitted (which makes the columns not | |
8268 | line up too nicely with the headers, but the effect is relatively | |
8269 | readable). */ | |
8270 | if (opts.addressprint) | |
8271 | { | |
8272 | annotate_field (4); | |
112e8700 | 8273 | uiout->field_skip ("addr"); |
edcc5120 TT |
8274 | } |
8275 | ||
8276 | annotate_field (5); | |
8277 | if (self->is_load) | |
8278 | { | |
8279 | if (self->regex) | |
8280 | msg = xstrprintf (_("load of library matching %s"), self->regex); | |
8281 | else | |
8282 | msg = xstrdup (_("load of library")); | |
8283 | } | |
8284 | else | |
8285 | { | |
8286 | if (self->regex) | |
8287 | msg = xstrprintf (_("unload of library matching %s"), self->regex); | |
8288 | else | |
8289 | msg = xstrdup (_("unload of library")); | |
8290 | } | |
112e8700 | 8291 | uiout->field_string ("what", msg); |
edcc5120 | 8292 | xfree (msg); |
8ac3646f | 8293 | |
112e8700 SM |
8294 | if (uiout->is_mi_like_p ()) |
8295 | uiout->field_string ("catch-type", self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8296 | } |
8297 | ||
8298 | static void | |
8299 | print_mention_catch_solib (struct breakpoint *b) | |
8300 | { | |
8301 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8302 | ||
8303 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8304 | self->is_load ? "load" : "unload"); | |
8305 | } | |
8306 | ||
8307 | static void | |
8308 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8309 | { | |
8310 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8311 | ||
8312 | fprintf_unfiltered (fp, "%s %s", | |
8313 | b->disposition == disp_del ? "tcatch" : "catch", | |
8314 | self->is_load ? "load" : "unload"); | |
8315 | if (self->regex) | |
8316 | fprintf_unfiltered (fp, " %s", self->regex); | |
8317 | fprintf_unfiltered (fp, "\n"); | |
8318 | } | |
8319 | ||
8320 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8321 | ||
91985142 MG |
8322 | /* Shared helper function (MI and CLI) for creating and installing |
8323 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
8324 | the events to be caught are load events, otherwise they are | |
8325 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
8326 | temporary one. If ENABLED is non-zero the catchpoint is | |
8327 | created in an enabled state. */ | |
edcc5120 | 8328 | |
91985142 | 8329 | void |
a121b7c1 | 8330 | add_solib_catchpoint (const char *arg, int is_load, int is_temp, int enabled) |
edcc5120 | 8331 | { |
edcc5120 | 8332 | struct gdbarch *gdbarch = get_current_arch (); |
edcc5120 | 8333 | |
edcc5120 TT |
8334 | if (!arg) |
8335 | arg = ""; | |
f1735a53 | 8336 | arg = skip_spaces (arg); |
edcc5120 | 8337 | |
36bd8eaa | 8338 | std::unique_ptr<solib_catchpoint> c (new solib_catchpoint ()); |
edcc5120 TT |
8339 | |
8340 | if (*arg != '\0') | |
8341 | { | |
2d7cc5c7 PA |
8342 | c->compiled.reset (new compiled_regex (arg, REG_NOSUB, |
8343 | _("Invalid regexp"))); | |
edcc5120 TT |
8344 | c->regex = xstrdup (arg); |
8345 | } | |
8346 | ||
8347 | c->is_load = is_load; | |
36bd8eaa | 8348 | init_catchpoint (c.get (), gdbarch, is_temp, NULL, |
edcc5120 TT |
8349 | &catch_solib_breakpoint_ops); |
8350 | ||
c1fc2657 | 8351 | c->enable_state = enabled ? bp_enabled : bp_disabled; |
91985142 | 8352 | |
b270e6f9 | 8353 | install_breakpoint (0, std::move (c), 1); |
edcc5120 TT |
8354 | } |
8355 | ||
91985142 MG |
8356 | /* A helper function that does all the work for "catch load" and |
8357 | "catch unload". */ | |
8358 | ||
8359 | static void | |
8360 | catch_load_or_unload (char *arg, int from_tty, int is_load, | |
8361 | struct cmd_list_element *command) | |
8362 | { | |
8363 | int tempflag; | |
8364 | const int enabled = 1; | |
8365 | ||
8366 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8367 | ||
8368 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
8369 | } | |
8370 | ||
edcc5120 TT |
8371 | static void |
8372 | catch_load_command_1 (char *arg, int from_tty, | |
8373 | struct cmd_list_element *command) | |
8374 | { | |
8375 | catch_load_or_unload (arg, from_tty, 1, command); | |
8376 | } | |
8377 | ||
8378 | static void | |
8379 | catch_unload_command_1 (char *arg, int from_tty, | |
8380 | struct cmd_list_element *command) | |
8381 | { | |
8382 | catch_load_or_unload (arg, from_tty, 0, command); | |
8383 | } | |
8384 | ||
346774a9 PA |
8385 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8386 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8387 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8388 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8389 | |
ab04a2af | 8390 | void |
346774a9 PA |
8391 | init_catchpoint (struct breakpoint *b, |
8392 | struct gdbarch *gdbarch, int tempflag, | |
63160a43 | 8393 | const char *cond_string, |
c0a91b2b | 8394 | const struct breakpoint_ops *ops) |
c906108c | 8395 | { |
51abb421 | 8396 | symtab_and_line sal; |
6c95b8df | 8397 | sal.pspace = current_program_space; |
c5aa993b | 8398 | |
28010a5d | 8399 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8400 | |
1b36a34b | 8401 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8402 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8403 | } |
8404 | ||
28010a5d | 8405 | void |
b270e6f9 | 8406 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 8407 | { |
b270e6f9 | 8408 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 8409 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8410 | if (is_tracepoint (b)) |
8411 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8412 | if (!internal) |
8413 | mention (b); | |
c56053d2 | 8414 | observer_notify_breakpoint_created (b); |
3ea46bff YQ |
8415 | |
8416 | if (update_gll) | |
44702360 | 8417 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8418 | } |
8419 | ||
9b70b993 | 8420 | static void |
a6d9a66e | 8421 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
63160a43 | 8422 | int tempflag, const char *cond_string, |
c0a91b2b | 8423 | const struct breakpoint_ops *ops) |
c906108c | 8424 | { |
b270e6f9 | 8425 | std::unique_ptr<fork_catchpoint> c (new fork_catchpoint ()); |
ce78b96d | 8426 | |
b270e6f9 | 8427 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, ops); |
e29a4733 PA |
8428 | |
8429 | c->forked_inferior_pid = null_ptid; | |
8430 | ||
b270e6f9 | 8431 | install_breakpoint (0, std::move (c), 1); |
c906108c SS |
8432 | } |
8433 | ||
fe798b75 JB |
8434 | /* Exec catchpoints. */ |
8435 | ||
b4d90040 | 8436 | /* An instance of this type is used to represent an exec catchpoint. |
c1fc2657 | 8437 | A breakpoint is really of this type iff its ops pointer points to |
b4d90040 PA |
8438 | CATCH_EXEC_BREAKPOINT_OPS. */ |
8439 | ||
c1fc2657 | 8440 | struct exec_catchpoint : public breakpoint |
b4d90040 | 8441 | { |
c1fc2657 | 8442 | ~exec_catchpoint () override; |
b4d90040 PA |
8443 | |
8444 | /* Filename of a program whose exec triggered this catchpoint. | |
8445 | This field is only valid immediately after this catchpoint has | |
8446 | triggered. */ | |
8447 | char *exec_pathname; | |
8448 | }; | |
8449 | ||
c1fc2657 | 8450 | /* Exec catchpoint destructor. */ |
b4d90040 | 8451 | |
c1fc2657 | 8452 | exec_catchpoint::~exec_catchpoint () |
b4d90040 | 8453 | { |
c1fc2657 | 8454 | xfree (this->exec_pathname); |
b4d90040 PA |
8455 | } |
8456 | ||
77b06cd7 TJB |
8457 | static int |
8458 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8459 | { |
dfd4cc63 | 8460 | return target_insert_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8461 | } |
c906108c | 8462 | |
fe798b75 | 8463 | static int |
73971819 | 8464 | remove_catch_exec (struct bp_location *bl, enum remove_bp_reason reason) |
fe798b75 | 8465 | { |
dfd4cc63 | 8466 | return target_remove_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8467 | } |
c906108c | 8468 | |
fe798b75 | 8469 | static int |
f1310107 | 8470 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
09ac7c10 TT |
8471 | struct address_space *aspace, CORE_ADDR bp_addr, |
8472 | const struct target_waitstatus *ws) | |
fe798b75 | 8473 | { |
b4d90040 PA |
8474 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8475 | ||
f90263c1 TT |
8476 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8477 | return 0; | |
8478 | ||
8479 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8480 | return 1; | |
fe798b75 | 8481 | } |
c906108c | 8482 | |
fe798b75 | 8483 | static enum print_stop_action |
348d480f | 8484 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8485 | { |
36dfb11c | 8486 | struct ui_out *uiout = current_uiout; |
348d480f | 8487 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8488 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8489 | ||
fe798b75 | 8490 | annotate_catchpoint (b->number); |
f303dbd6 | 8491 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8492 | if (b->disposition == disp_del) |
112e8700 | 8493 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 8494 | else |
112e8700 SM |
8495 | uiout->text ("Catchpoint "); |
8496 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 8497 | { |
112e8700 SM |
8498 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_EXEC)); |
8499 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 8500 | } |
112e8700 SM |
8501 | uiout->field_int ("bkptno", b->number); |
8502 | uiout->text (" (exec'd "); | |
8503 | uiout->field_string ("new-exec", c->exec_pathname); | |
8504 | uiout->text ("), "); | |
36dfb11c | 8505 | |
fe798b75 | 8506 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8507 | } |
8508 | ||
fe798b75 | 8509 | static void |
a6d9a66e | 8510 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8511 | { |
b4d90040 | 8512 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8513 | struct value_print_options opts; |
79a45e25 | 8514 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8515 | |
8516 | get_user_print_options (&opts); | |
8517 | ||
8518 | /* Field 4, the address, is omitted (which makes the columns | |
8519 | not line up too nicely with the headers, but the effect | |
8520 | is relatively readable). */ | |
8521 | if (opts.addressprint) | |
112e8700 | 8522 | uiout->field_skip ("addr"); |
fe798b75 | 8523 | annotate_field (5); |
112e8700 | 8524 | uiout->text ("exec"); |
b4d90040 | 8525 | if (c->exec_pathname != NULL) |
fe798b75 | 8526 | { |
112e8700 SM |
8527 | uiout->text (", program \""); |
8528 | uiout->field_string ("what", c->exec_pathname); | |
8529 | uiout->text ("\" "); | |
fe798b75 | 8530 | } |
8ac3646f | 8531 | |
112e8700 SM |
8532 | if (uiout->is_mi_like_p ()) |
8533 | uiout->field_string ("catch-type", "exec"); | |
fe798b75 JB |
8534 | } |
8535 | ||
8536 | static void | |
8537 | print_mention_catch_exec (struct breakpoint *b) | |
8538 | { | |
8539 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8540 | } | |
8541 | ||
6149aea9 PA |
8542 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8543 | catchpoints. */ | |
8544 | ||
8545 | static void | |
8546 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8547 | { | |
8548 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8549 | print_recreate_thread (b, fp); |
6149aea9 PA |
8550 | } |
8551 | ||
2060206e | 8552 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8553 | |
c906108c | 8554 | static int |
fba45db2 | 8555 | hw_breakpoint_used_count (void) |
c906108c | 8556 | { |
c906108c | 8557 | int i = 0; |
f1310107 TJB |
8558 | struct breakpoint *b; |
8559 | struct bp_location *bl; | |
c906108c SS |
8560 | |
8561 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8562 | { |
d6b74ac4 | 8563 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8564 | for (bl = b->loc; bl; bl = bl->next) |
8565 | { | |
8566 | /* Special types of hardware breakpoints may use more than | |
8567 | one register. */ | |
348d480f | 8568 | i += b->ops->resources_needed (bl); |
f1310107 | 8569 | } |
c5aa993b | 8570 | } |
c906108c SS |
8571 | |
8572 | return i; | |
8573 | } | |
8574 | ||
a1398e0c PA |
8575 | /* Returns the resources B would use if it were a hardware |
8576 | watchpoint. */ | |
8577 | ||
c906108c | 8578 | static int |
a1398e0c | 8579 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8580 | { |
c906108c | 8581 | int i = 0; |
e09342b5 | 8582 | struct bp_location *bl; |
c906108c | 8583 | |
a1398e0c PA |
8584 | if (!breakpoint_enabled (b)) |
8585 | return 0; | |
8586 | ||
8587 | for (bl = b->loc; bl; bl = bl->next) | |
8588 | { | |
8589 | /* Special types of hardware watchpoints may use more than | |
8590 | one register. */ | |
8591 | i += b->ops->resources_needed (bl); | |
8592 | } | |
8593 | ||
8594 | return i; | |
8595 | } | |
8596 | ||
8597 | /* Returns the sum the used resources of all hardware watchpoints of | |
8598 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8599 | the sum of the used resources of all hardware watchpoints of other | |
8600 | types _not_ TYPE. */ | |
8601 | ||
8602 | static int | |
8603 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8604 | enum bptype type, int *other_type_used) | |
8605 | { | |
8606 | int i = 0; | |
8607 | struct breakpoint *b; | |
8608 | ||
c906108c SS |
8609 | *other_type_used = 0; |
8610 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8611 | { |
a1398e0c PA |
8612 | if (b == except) |
8613 | continue; | |
e09342b5 TJB |
8614 | if (!breakpoint_enabled (b)) |
8615 | continue; | |
8616 | ||
a1398e0c PA |
8617 | if (b->type == type) |
8618 | i += hw_watchpoint_use_count (b); | |
8619 | else if (is_hardware_watchpoint (b)) | |
8620 | *other_type_used = 1; | |
e09342b5 TJB |
8621 | } |
8622 | ||
c906108c SS |
8623 | return i; |
8624 | } | |
8625 | ||
c906108c | 8626 | void |
fba45db2 | 8627 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8628 | { |
c5aa993b | 8629 | struct breakpoint *b; |
c906108c SS |
8630 | |
8631 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8632 | { |
cc60f2e3 | 8633 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8634 | { |
b5de0fa7 | 8635 | b->enable_state = bp_call_disabled; |
44702360 | 8636 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b JM |
8637 | } |
8638 | } | |
c906108c SS |
8639 | } |
8640 | ||
8641 | void | |
fba45db2 | 8642 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8643 | { |
c5aa993b | 8644 | struct breakpoint *b; |
c906108c SS |
8645 | |
8646 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8647 | { |
cc60f2e3 | 8648 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8649 | { |
b5de0fa7 | 8650 | b->enable_state = bp_enabled; |
44702360 | 8651 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b JM |
8652 | } |
8653 | } | |
c906108c SS |
8654 | } |
8655 | ||
8bea4e01 UW |
8656 | void |
8657 | disable_breakpoints_before_startup (void) | |
8658 | { | |
6c95b8df | 8659 | current_program_space->executing_startup = 1; |
44702360 | 8660 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8661 | } |
8662 | ||
8663 | void | |
8664 | enable_breakpoints_after_startup (void) | |
8665 | { | |
6c95b8df | 8666 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8667 | breakpoint_re_set (); |
8bea4e01 UW |
8668 | } |
8669 | ||
7c16b83e PA |
8670 | /* Create a new single-step breakpoint for thread THREAD, with no |
8671 | locations. */ | |
c906108c | 8672 | |
7c16b83e PA |
8673 | static struct breakpoint * |
8674 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8675 | { | |
b270e6f9 | 8676 | std::unique_ptr<breakpoint> b (new breakpoint ()); |
7c16b83e | 8677 | |
b270e6f9 | 8678 | init_raw_breakpoint_without_location (b.get (), gdbarch, bp_single_step, |
7c16b83e PA |
8679 | &momentary_breakpoint_ops); |
8680 | ||
8681 | b->disposition = disp_donttouch; | |
8682 | b->frame_id = null_frame_id; | |
8683 | ||
8684 | b->thread = thread; | |
8685 | gdb_assert (b->thread != 0); | |
8686 | ||
b270e6f9 | 8687 | return add_to_breakpoint_chain (std::move (b)); |
7c16b83e PA |
8688 | } |
8689 | ||
8690 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8691 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8692 | frame. */ | |
c906108c SS |
8693 | |
8694 | struct breakpoint * | |
a6d9a66e UW |
8695 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8696 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8697 | { |
52f0bd74 | 8698 | struct breakpoint *b; |
edb3359d | 8699 | |
193facb3 JK |
8700 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8701 | tail-called one. */ | |
8702 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8703 | |
06edf0c0 | 8704 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8705 | b->enable_state = bp_enabled; |
8706 | b->disposition = disp_donttouch; | |
818dd999 | 8707 | b->frame_id = frame_id; |
c906108c | 8708 | |
4a64f543 MS |
8709 | /* If we're debugging a multi-threaded program, then we want |
8710 | momentary breakpoints to be active in only a single thread of | |
8711 | control. */ | |
39f77062 | 8712 | if (in_thread_list (inferior_ptid)) |
5d5658a1 | 8713 | b->thread = ptid_to_global_thread_id (inferior_ptid); |
c906108c | 8714 | |
44702360 | 8715 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8716 | |
c906108c SS |
8717 | return b; |
8718 | } | |
611c83ae | 8719 | |
06edf0c0 | 8720 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8721 | The new breakpoint will have type TYPE, use OPS as its |
8722 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8723 | |
06edf0c0 PA |
8724 | static struct breakpoint * |
8725 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8726 | enum bptype type, | |
a1aa2221 LM |
8727 | const struct breakpoint_ops *ops, |
8728 | int loc_enabled) | |
e58b0e63 PA |
8729 | { |
8730 | struct breakpoint *copy; | |
8731 | ||
06edf0c0 | 8732 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8733 | copy->loc = allocate_bp_location (copy); |
0e30163f | 8734 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 8735 | |
a6d9a66e | 8736 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8737 | copy->loc->requested_address = orig->loc->requested_address; |
8738 | copy->loc->address = orig->loc->address; | |
8739 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8740 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8741 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8742 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8743 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8744 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8745 | copy->frame_id = orig->frame_id; |
8746 | copy->thread = orig->thread; | |
6c95b8df | 8747 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8748 | |
8749 | copy->enable_state = bp_enabled; | |
8750 | copy->disposition = disp_donttouch; | |
8751 | copy->number = internal_breakpoint_number--; | |
8752 | ||
44702360 | 8753 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8754 | return copy; |
8755 | } | |
8756 | ||
06edf0c0 PA |
8757 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8758 | ORIG is NULL. */ | |
8759 | ||
8760 | struct breakpoint * | |
8761 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8762 | { | |
8763 | /* If there's nothing to clone, then return nothing. */ | |
8764 | if (orig == NULL) | |
8765 | return NULL; | |
8766 | ||
a1aa2221 | 8767 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
8768 | } |
8769 | ||
611c83ae | 8770 | struct breakpoint * |
a6d9a66e UW |
8771 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8772 | enum bptype type) | |
611c83ae PA |
8773 | { |
8774 | struct symtab_and_line sal; | |
8775 | ||
8776 | sal = find_pc_line (pc, 0); | |
8777 | sal.pc = pc; | |
8778 | sal.section = find_pc_overlay (pc); | |
8779 | sal.explicit_pc = 1; | |
8780 | ||
a6d9a66e | 8781 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8782 | } |
c906108c | 8783 | \f |
c5aa993b | 8784 | |
c906108c SS |
8785 | /* Tell the user we have just set a breakpoint B. */ |
8786 | ||
8787 | static void | |
fba45db2 | 8788 | mention (struct breakpoint *b) |
c906108c | 8789 | { |
348d480f | 8790 | b->ops->print_mention (b); |
112e8700 | 8791 | if (current_uiout->is_mi_like_p ()) |
fb40c209 | 8792 | return; |
c906108c SS |
8793 | printf_filtered ("\n"); |
8794 | } | |
c906108c | 8795 | \f |
c5aa993b | 8796 | |
1a853c52 PA |
8797 | static int bp_loc_is_permanent (struct bp_location *loc); |
8798 | ||
0d381245 | 8799 | static struct bp_location * |
39d61571 | 8800 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8801 | const struct symtab_and_line *sal) |
8802 | { | |
8803 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8804 | CORE_ADDR adjusted_address; |
8805 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8806 | ||
8807 | if (loc_gdbarch == NULL) | |
8808 | loc_gdbarch = b->gdbarch; | |
8809 | ||
8810 | /* Adjust the breakpoint's address prior to allocating a location. | |
8811 | Once we call allocate_bp_location(), that mostly uninitialized | |
8812 | location will be placed on the location chain. Adjustment of the | |
8813 | breakpoint may cause target_read_memory() to be called and we do | |
8814 | not want its scan of the location chain to find a breakpoint and | |
8815 | location that's only been partially initialized. */ | |
8816 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8817 | sal->pc, b->type); | |
0d381245 | 8818 | |
d30113d4 | 8819 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8820 | loc = allocate_bp_location (b); |
d30113d4 JK |
8821 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8822 | tmp = &((*tmp)->next)) | |
0d381245 | 8823 | ; |
d30113d4 | 8824 | loc->next = *tmp; |
0d381245 | 8825 | *tmp = loc; |
3742cc8b | 8826 | |
0d381245 | 8827 | loc->requested_address = sal->pc; |
3742cc8b | 8828 | loc->address = adjusted_address; |
6c95b8df | 8829 | loc->pspace = sal->pspace; |
729662a5 TT |
8830 | loc->probe.probe = sal->probe; |
8831 | loc->probe.objfile = sal->objfile; | |
6c95b8df | 8832 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8833 | loc->section = sal->section; |
3742cc8b | 8834 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8835 | loc->line_number = sal->line; |
2f202fde | 8836 | loc->symtab = sal->symtab; |
f8eba3c6 | 8837 | |
0e30163f JK |
8838 | set_breakpoint_location_function (loc, |
8839 | sal->explicit_pc || sal->explicit_line); | |
1a853c52 | 8840 | |
6ae88661 LM |
8841 | /* While by definition, permanent breakpoints are already present in the |
8842 | code, we don't mark the location as inserted. Normally one would expect | |
8843 | that GDB could rely on that breakpoint instruction to stop the program, | |
8844 | thus removing the need to insert its own breakpoint, except that executing | |
8845 | the breakpoint instruction can kill the target instead of reporting a | |
8846 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8847 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8848 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8849 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8850 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8851 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8852 | it manually increments the PC, thus avoiding executing the breakpoint | |
8853 | instruction.) */ | |
1a853c52 | 8854 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8855 | loc->permanent = 1; |
1a853c52 | 8856 | |
0d381245 VP |
8857 | return loc; |
8858 | } | |
514f746b AR |
8859 | \f |
8860 | ||
1cf4d951 | 8861 | /* See breakpoint.h. */ |
514f746b | 8862 | |
1cf4d951 PA |
8863 | int |
8864 | program_breakpoint_here_p (struct gdbarch *gdbarch, CORE_ADDR address) | |
514f746b AR |
8865 | { |
8866 | int len; | |
8867 | CORE_ADDR addr; | |
1afeeb75 | 8868 | const gdb_byte *bpoint; |
514f746b AR |
8869 | gdb_byte *target_mem; |
8870 | ||
1cf4d951 PA |
8871 | addr = address; |
8872 | bpoint = gdbarch_breakpoint_from_pc (gdbarch, &addr, &len); | |
8873 | ||
8874 | /* Software breakpoints unsupported? */ | |
8875 | if (bpoint == NULL) | |
8876 | return 0; | |
8877 | ||
224c3ddb | 8878 | target_mem = (gdb_byte *) alloca (len); |
1cf4d951 PA |
8879 | |
8880 | /* Enable the automatic memory restoration from breakpoints while | |
8881 | we read the memory. Otherwise we could say about our temporary | |
8882 | breakpoints they are permanent. */ | |
cb85b21b TT |
8883 | scoped_restore restore_memory |
8884 | = make_scoped_restore_show_memory_breakpoints (0); | |
1cf4d951 PA |
8885 | |
8886 | if (target_read_memory (address, target_mem, len) == 0 | |
8887 | && memcmp (target_mem, bpoint, len) == 0) | |
cb85b21b | 8888 | return 1; |
1cf4d951 | 8889 | |
cb85b21b | 8890 | return 0; |
1cf4d951 PA |
8891 | } |
8892 | ||
8893 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8894 | return 0 otherwise. */ | |
8895 | ||
8896 | static int | |
8897 | bp_loc_is_permanent (struct bp_location *loc) | |
8898 | { | |
514f746b AR |
8899 | gdb_assert (loc != NULL); |
8900 | ||
244558af LM |
8901 | /* If we have a catchpoint or a watchpoint, just return 0. We should not |
8902 | attempt to read from the addresses the locations of these breakpoint types | |
8903 | point to. program_breakpoint_here_p, below, will attempt to read | |
8904 | memory. */ | |
8905 | if (!breakpoint_address_is_meaningful (loc->owner)) | |
8906 | return 0; | |
8907 | ||
5ed8105e | 8908 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8909 | switch_to_program_space_and_thread (loc->pspace); |
5ed8105e | 8910 | return program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8911 | } |
8912 | ||
e7e0cddf SS |
8913 | /* Build a command list for the dprintf corresponding to the current |
8914 | settings of the dprintf style options. */ | |
8915 | ||
8916 | static void | |
8917 | update_dprintf_command_list (struct breakpoint *b) | |
8918 | { | |
8919 | char *dprintf_args = b->extra_string; | |
8920 | char *printf_line = NULL; | |
8921 | ||
8922 | if (!dprintf_args) | |
8923 | return; | |
8924 | ||
8925 | dprintf_args = skip_spaces (dprintf_args); | |
8926 | ||
8927 | /* Allow a comma, as it may have terminated a location, but don't | |
8928 | insist on it. */ | |
8929 | if (*dprintf_args == ',') | |
8930 | ++dprintf_args; | |
8931 | dprintf_args = skip_spaces (dprintf_args); | |
8932 | ||
8933 | if (*dprintf_args != '"') | |
8934 | error (_("Bad format string, missing '\"'.")); | |
8935 | ||
d3ce09f5 | 8936 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8937 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8938 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8939 | { |
8940 | if (!dprintf_function) | |
8941 | error (_("No function supplied for dprintf call")); | |
8942 | ||
8943 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8944 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8945 | dprintf_function, | |
8946 | dprintf_channel, | |
8947 | dprintf_args); | |
8948 | else | |
8949 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8950 | dprintf_function, | |
8951 | dprintf_args); | |
8952 | } | |
d3ce09f5 SS |
8953 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8954 | { | |
8955 | if (target_can_run_breakpoint_commands ()) | |
8956 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8957 | else | |
8958 | { | |
8959 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8960 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8961 | } | |
8962 | } | |
e7e0cddf SS |
8963 | else |
8964 | internal_error (__FILE__, __LINE__, | |
8965 | _("Invalid dprintf style.")); | |
8966 | ||
f28045c2 | 8967 | gdb_assert (printf_line != NULL); |
9d6e6e84 | 8968 | /* Manufacture a printf sequence. */ |
f28045c2 | 8969 | { |
8d749320 | 8970 | struct command_line *printf_cmd_line = XNEW (struct command_line); |
e7e0cddf | 8971 | |
f28045c2 YQ |
8972 | printf_cmd_line->control_type = simple_control; |
8973 | printf_cmd_line->body_count = 0; | |
8974 | printf_cmd_line->body_list = NULL; | |
9d6e6e84 | 8975 | printf_cmd_line->next = NULL; |
f28045c2 | 8976 | printf_cmd_line->line = printf_line; |
e7e0cddf | 8977 | |
93921405 | 8978 | breakpoint_set_commands (b, command_line_up (printf_cmd_line)); |
f28045c2 | 8979 | } |
e7e0cddf SS |
8980 | } |
8981 | ||
8982 | /* Update all dprintf commands, making their command lists reflect | |
8983 | current style settings. */ | |
8984 | ||
8985 | static void | |
8986 | update_dprintf_commands (char *args, int from_tty, | |
8987 | struct cmd_list_element *c) | |
8988 | { | |
8989 | struct breakpoint *b; | |
8990 | ||
8991 | ALL_BREAKPOINTS (b) | |
8992 | { | |
8993 | if (b->type == bp_dprintf) | |
8994 | update_dprintf_command_list (b); | |
8995 | } | |
8996 | } | |
c3f6f71d | 8997 | |
f00aae0f KS |
8998 | /* Create a breakpoint with SAL as location. Use LOCATION |
8999 | as a description of the location, and COND_STRING | |
b35a8b2f DE |
9000 | as condition expression. If LOCATION is NULL then create an |
9001 | "address location" from the address in the SAL. */ | |
018d34a4 VP |
9002 | |
9003 | static void | |
d9b3f62e | 9004 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
6c5b2ebe | 9005 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 9006 | event_location_up &&location, |
e1e01040 PA |
9007 | gdb::unique_xmalloc_ptr<char> filter, |
9008 | gdb::unique_xmalloc_ptr<char> cond_string, | |
9009 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
9010 | enum bptype type, enum bpdisp disposition, |
9011 | int thread, int task, int ignore_count, | |
c0a91b2b | 9012 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
9013 | int enabled, int internal, unsigned flags, |
9014 | int display_canonical) | |
018d34a4 | 9015 | { |
0d381245 | 9016 | int i; |
018d34a4 VP |
9017 | |
9018 | if (type == bp_hardware_breakpoint) | |
9019 | { | |
fbbd034e AS |
9020 | int target_resources_ok; |
9021 | ||
9022 | i = hw_breakpoint_used_count (); | |
9023 | target_resources_ok = | |
9024 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
9025 | i + 1, 0); |
9026 | if (target_resources_ok == 0) | |
9027 | error (_("No hardware breakpoint support in the target.")); | |
9028 | else if (target_resources_ok < 0) | |
9029 | error (_("Hardware breakpoints used exceeds limit.")); | |
9030 | } | |
9031 | ||
6c5b2ebe | 9032 | gdb_assert (!sals.empty ()); |
6c95b8df | 9033 | |
6c5b2ebe | 9034 | for (const auto &sal : sals) |
0d381245 | 9035 | { |
0d381245 VP |
9036 | struct bp_location *loc; |
9037 | ||
9038 | if (from_tty) | |
5af949e3 UW |
9039 | { |
9040 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
9041 | if (!loc_gdbarch) | |
9042 | loc_gdbarch = gdbarch; | |
9043 | ||
9044 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 9045 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 9046 | } |
0d381245 | 9047 | |
6c5b2ebe | 9048 | if (&sal == &sals[0]) |
0d381245 | 9049 | { |
d9b3f62e | 9050 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 9051 | b->thread = thread; |
4a306c9a | 9052 | b->task = task; |
855a6e68 | 9053 | |
e1e01040 PA |
9054 | b->cond_string = cond_string.release (); |
9055 | b->extra_string = extra_string.release (); | |
0d381245 | 9056 | b->ignore_count = ignore_count; |
41447f92 | 9057 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 9058 | b->disposition = disposition; |
6c95b8df | 9059 | |
44f238bb PA |
9060 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
9061 | b->loc->inserted = 1; | |
9062 | ||
0fb4aa4b PA |
9063 | if (type == bp_static_tracepoint) |
9064 | { | |
d9b3f62e | 9065 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
9066 | struct static_tracepoint_marker marker; |
9067 | ||
983af33b | 9068 | if (strace_marker_p (b)) |
0fb4aa4b PA |
9069 | { |
9070 | /* We already know the marker exists, otherwise, we | |
9071 | wouldn't see a sal for it. */ | |
d28cd78a TT |
9072 | const char *p |
9073 | = &event_location_to_string (b->location.get ())[3]; | |
f00aae0f | 9074 | const char *endp; |
0fb4aa4b | 9075 | char *marker_str; |
0fb4aa4b | 9076 | |
f1735a53 | 9077 | p = skip_spaces (p); |
0fb4aa4b | 9078 | |
f1735a53 | 9079 | endp = skip_to_space (p); |
0fb4aa4b PA |
9080 | |
9081 | marker_str = savestring (p, endp - p); | |
d9b3f62e | 9082 | t->static_trace_marker_id = marker_str; |
0fb4aa4b | 9083 | |
3e43a32a MS |
9084 | printf_filtered (_("Probed static tracepoint " |
9085 | "marker \"%s\"\n"), | |
d9b3f62e | 9086 | t->static_trace_marker_id); |
0fb4aa4b PA |
9087 | } |
9088 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
9089 | { | |
d9b3f62e | 9090 | t->static_trace_marker_id = xstrdup (marker.str_id); |
0fb4aa4b PA |
9091 | release_static_tracepoint_marker (&marker); |
9092 | ||
3e43a32a MS |
9093 | printf_filtered (_("Probed static tracepoint " |
9094 | "marker \"%s\"\n"), | |
d9b3f62e | 9095 | t->static_trace_marker_id); |
0fb4aa4b PA |
9096 | } |
9097 | else | |
3e43a32a MS |
9098 | warning (_("Couldn't determine the static " |
9099 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
9100 | } |
9101 | ||
0d381245 VP |
9102 | loc = b->loc; |
9103 | } | |
9104 | else | |
018d34a4 | 9105 | { |
39d61571 | 9106 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
9107 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
9108 | loc->inserted = 1; | |
0d381245 VP |
9109 | } |
9110 | ||
9111 | if (b->cond_string) | |
9112 | { | |
bbc13ae3 KS |
9113 | const char *arg = b->cond_string; |
9114 | ||
1bb9788d TT |
9115 | loc->cond = parse_exp_1 (&arg, loc->address, |
9116 | block_for_pc (loc->address), 0); | |
0d381245 | 9117 | if (*arg) |
588ae58c | 9118 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 9119 | } |
e7e0cddf SS |
9120 | |
9121 | /* Dynamic printf requires and uses additional arguments on the | |
9122 | command line, otherwise it's an error. */ | |
9123 | if (type == bp_dprintf) | |
9124 | { | |
9125 | if (b->extra_string) | |
9126 | update_dprintf_command_list (b); | |
9127 | else | |
9128 | error (_("Format string required")); | |
9129 | } | |
9130 | else if (b->extra_string) | |
588ae58c | 9131 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 9132 | } |
018d34a4 | 9133 | |
56435ebe | 9134 | b->display_canonical = display_canonical; |
f00aae0f | 9135 | if (location != NULL) |
d28cd78a | 9136 | b->location = std::move (location); |
018d34a4 | 9137 | else |
d28cd78a | 9138 | b->location = new_address_location (b->loc->address, NULL, 0); |
e1e01040 | 9139 | b->filter = filter.release (); |
d9b3f62e | 9140 | } |
018d34a4 | 9141 | |
d9b3f62e PA |
9142 | static void |
9143 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 9144 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 9145 | event_location_up &&location, |
e1e01040 PA |
9146 | gdb::unique_xmalloc_ptr<char> filter, |
9147 | gdb::unique_xmalloc_ptr<char> cond_string, | |
9148 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
9149 | enum bptype type, enum bpdisp disposition, |
9150 | int thread, int task, int ignore_count, | |
c0a91b2b | 9151 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
9152 | int enabled, int internal, unsigned flags, |
9153 | int display_canonical) | |
d9b3f62e | 9154 | { |
a5e364af | 9155 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (type); |
d9b3f62e | 9156 | |
a5e364af | 9157 | init_breakpoint_sal (b.get (), gdbarch, |
ffc2605c | 9158 | sals, std::move (location), |
e1e01040 PA |
9159 | std::move (filter), |
9160 | std::move (cond_string), | |
9161 | std::move (extra_string), | |
d9b3f62e PA |
9162 | type, disposition, |
9163 | thread, task, ignore_count, | |
9164 | ops, from_tty, | |
44f238bb PA |
9165 | enabled, internal, flags, |
9166 | display_canonical); | |
d9b3f62e | 9167 | |
b270e6f9 | 9168 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
9169 | } |
9170 | ||
9171 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
9172 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
9173 | value. COND_STRING, if not NULL, specified the condition to be | |
9174 | used for all breakpoints. Essentially the only case where | |
9175 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
9176 | function. In that case, it's still not possible to specify | |
9177 | separate conditions for different overloaded functions, so | |
9178 | we take just a single condition string. | |
9179 | ||
c3f6f71d | 9180 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 9181 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
9182 | array contents). If the function fails (error() is called), the |
9183 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 9184 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
9185 | |
9186 | static void | |
8cdf0e15 | 9187 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 9188 | struct linespec_result *canonical, |
e1e01040 PA |
9189 | gdb::unique_xmalloc_ptr<char> cond_string, |
9190 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
9191 | enum bptype type, enum bpdisp disposition, |
9192 | int thread, int task, int ignore_count, | |
c0a91b2b | 9193 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 9194 | int enabled, int internal, unsigned flags) |
c906108c | 9195 | { |
f8eba3c6 | 9196 | if (canonical->pre_expanded) |
6c5b2ebe | 9197 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 9198 | |
6c5b2ebe | 9199 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 9200 | { |
f00aae0f | 9201 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 9202 | 'break', without arguments. */ |
ffc2605c | 9203 | event_location_up location |
f00aae0f | 9204 | = (canonical->location != NULL |
8e9e35b1 | 9205 | ? copy_event_location (canonical->location.get ()) : NULL); |
e1e01040 | 9206 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 9207 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 9208 | |
6c5b2ebe | 9209 | create_breakpoint_sal (gdbarch, lsal.sals, |
ffc2605c | 9210 | std::move (location), |
e1e01040 PA |
9211 | std::move (filter_string), |
9212 | std::move (cond_string), | |
9213 | std::move (extra_string), | |
e7e0cddf | 9214 | type, disposition, |
84f4c1fe | 9215 | thread, task, ignore_count, ops, |
44f238bb | 9216 | from_tty, enabled, internal, flags, |
56435ebe | 9217 | canonical->special_display); |
c3f6f71d | 9218 | } |
c3f6f71d | 9219 | } |
c906108c | 9220 | |
f00aae0f | 9221 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 9222 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
9223 | addresses found. LOCATION points to the end of the SAL (for |
9224 | linespec locations). | |
9998af43 TJB |
9225 | |
9226 | The array and the line spec strings are allocated on the heap, it is | |
9227 | the caller's responsibility to free them. */ | |
c906108c | 9228 | |
b9362cc7 | 9229 | static void |
f00aae0f | 9230 | parse_breakpoint_sals (const struct event_location *location, |
58438ac1 | 9231 | struct linespec_result *canonical) |
c3f6f71d | 9232 | { |
f00aae0f KS |
9233 | struct symtab_and_line cursal; |
9234 | ||
9235 | if (event_location_type (location) == LINESPEC_LOCATION) | |
9236 | { | |
9237 | const char *address = get_linespec_location (location); | |
9238 | ||
9239 | if (address == NULL) | |
9240 | { | |
9241 | /* The last displayed codepoint, if it's valid, is our default | |
9242 | breakpoint address. */ | |
9243 | if (last_displayed_sal_is_valid ()) | |
9244 | { | |
f00aae0f KS |
9245 | /* Set sal's pspace, pc, symtab, and line to the values |
9246 | corresponding to the last call to print_frame_info. | |
9247 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9248 | as the breakpoint line number is inappropriate otherwise. | |
9249 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
9250 | symtab_and_line sal = get_last_displayed_sal (); |
9251 | CORE_ADDR pc = sal.pc; | |
9252 | ||
f00aae0f KS |
9253 | sal = find_pc_line (pc, 0); |
9254 | ||
9255 | /* "break" without arguments is equivalent to "break *PC" | |
9256 | where PC is the last displayed codepoint's address. So | |
9257 | make sure to set sal.explicit_pc to prevent GDB from | |
9258 | trying to expand the list of sals to include all other | |
9259 | instances with the same symtab and line. */ | |
9260 | sal.pc = pc; | |
9261 | sal.explicit_pc = 1; | |
9262 | ||
6c5b2ebe PA |
9263 | struct linespec_sals lsal; |
9264 | lsal.sals = {sal}; | |
f00aae0f KS |
9265 | lsal.canonical = NULL; |
9266 | ||
6c5b2ebe | 9267 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
9268 | return; |
9269 | } | |
9270 | else | |
9271 | error (_("No default breakpoint address now.")); | |
c906108c | 9272 | } |
c906108c | 9273 | } |
f00aae0f KS |
9274 | |
9275 | /* Force almost all breakpoints to be in terms of the | |
9276 | current_source_symtab (which is decode_line_1's default). | |
9277 | This should produce the results we want almost all of the | |
9278 | time while leaving default_breakpoint_* alone. | |
9279 | ||
9280 | ObjC: However, don't match an Objective-C method name which | |
9281 | may have a '+' or '-' succeeded by a '['. */ | |
9282 | cursal = get_current_source_symtab_and_line (); | |
9283 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9284 | { |
f00aae0f | 9285 | const char *address = NULL; |
cc80f267 | 9286 | |
f00aae0f KS |
9287 | if (event_location_type (location) == LINESPEC_LOCATION) |
9288 | address = get_linespec_location (location); | |
cc80f267 | 9289 | |
f00aae0f KS |
9290 | if (!cursal.symtab |
9291 | || (address != NULL | |
9292 | && strchr ("+-", address[0]) != NULL | |
9293 | && address[1] != '[')) | |
9294 | { | |
c2f4122d | 9295 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
9296 | get_last_displayed_symtab (), |
9297 | get_last_displayed_line (), | |
9298 | canonical, NULL, NULL); | |
9299 | return; | |
9300 | } | |
c906108c | 9301 | } |
f00aae0f | 9302 | |
c2f4122d | 9303 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 9304 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 9305 | } |
c906108c | 9306 | |
c906108c | 9307 | |
c3f6f71d | 9308 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9309 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9310 | |
b9362cc7 | 9311 | static void |
6c5b2ebe | 9312 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 9313 | { |
6c5b2ebe PA |
9314 | for (auto &sal : sals) |
9315 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
9316 | } |
9317 | ||
7a697b8d SS |
9318 | /* Fast tracepoints may have restrictions on valid locations. For |
9319 | instance, a fast tracepoint using a jump instead of a trap will | |
9320 | likely have to overwrite more bytes than a trap would, and so can | |
9321 | only be placed where the instruction is longer than the jump, or a | |
9322 | multi-instruction sequence does not have a jump into the middle of | |
9323 | it, etc. */ | |
9324 | ||
9325 | static void | |
9326 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 9327 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 9328 | { |
6c5b2ebe | 9329 | int rslt; |
7a697b8d SS |
9330 | char *msg; |
9331 | struct cleanup *old_chain; | |
9332 | ||
6c5b2ebe | 9333 | for (const auto &sal : sals) |
7a697b8d | 9334 | { |
f8eba3c6 TT |
9335 | struct gdbarch *sarch; |
9336 | ||
6c5b2ebe | 9337 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
9338 | /* We fall back to GDBARCH if there is no architecture |
9339 | associated with SAL. */ | |
9340 | if (sarch == NULL) | |
9341 | sarch = gdbarch; | |
6c5b2ebe | 9342 | rslt = gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg); |
7a697b8d SS |
9343 | old_chain = make_cleanup (xfree, msg); |
9344 | ||
9345 | if (!rslt) | |
53c3572a | 9346 | error (_("May not have a fast tracepoint at %s%s"), |
6c5b2ebe | 9347 | paddress (sarch, sal.pc), (msg ? msg : "")); |
7a697b8d SS |
9348 | |
9349 | do_cleanups (old_chain); | |
9350 | } | |
9351 | } | |
9352 | ||
018d34a4 VP |
9353 | /* Given TOK, a string specification of condition and thread, as |
9354 | accepted by the 'break' command, extract the condition | |
9355 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9356 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9357 | If no condition is found, *COND_STRING is set to NULL. |
9358 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9359 | |
9360 | static void | |
bbc13ae3 | 9361 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9362 | char **cond_string, int *thread, int *task, |
9363 | char **rest) | |
018d34a4 VP |
9364 | { |
9365 | *cond_string = NULL; | |
9366 | *thread = -1; | |
ed1d1739 KS |
9367 | *task = 0; |
9368 | *rest = NULL; | |
9369 | ||
018d34a4 VP |
9370 | while (tok && *tok) |
9371 | { | |
bbc13ae3 | 9372 | const char *end_tok; |
018d34a4 | 9373 | int toklen; |
bbc13ae3 KS |
9374 | const char *cond_start = NULL; |
9375 | const char *cond_end = NULL; | |
cc59ec59 | 9376 | |
f1735a53 | 9377 | tok = skip_spaces (tok); |
e7e0cddf SS |
9378 | |
9379 | if ((*tok == '"' || *tok == ',') && rest) | |
9380 | { | |
9381 | *rest = savestring (tok, strlen (tok)); | |
9382 | return; | |
9383 | } | |
9384 | ||
f1735a53 | 9385 | end_tok = skip_to_space (tok); |
d634f2de | 9386 | |
018d34a4 | 9387 | toklen = end_tok - tok; |
d634f2de | 9388 | |
018d34a4 VP |
9389 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9390 | { | |
9391 | tok = cond_start = end_tok + 1; | |
4d01a485 | 9392 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
018d34a4 | 9393 | cond_end = tok; |
d634f2de | 9394 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9395 | } |
9396 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9397 | { | |
5d5658a1 PA |
9398 | const char *tmptok; |
9399 | struct thread_info *thr; | |
d634f2de | 9400 | |
018d34a4 | 9401 | tok = end_tok + 1; |
5d5658a1 | 9402 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
9403 | if (tok == tmptok) |
9404 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 9405 | *thread = thr->global_num; |
bbc13ae3 | 9406 | tok = tmptok; |
018d34a4 | 9407 | } |
4a306c9a JB |
9408 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9409 | { | |
9410 | char *tmptok; | |
9411 | ||
9412 | tok = end_tok + 1; | |
bbc13ae3 | 9413 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9414 | if (tok == tmptok) |
9415 | error (_("Junk after task keyword.")); | |
9416 | if (!valid_task_id (*task)) | |
b6199126 | 9417 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9418 | tok = tmptok; |
4a306c9a | 9419 | } |
e7e0cddf SS |
9420 | else if (rest) |
9421 | { | |
9422 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9423 | return; |
e7e0cddf | 9424 | } |
018d34a4 VP |
9425 | else |
9426 | error (_("Junk at end of arguments.")); | |
9427 | } | |
9428 | } | |
9429 | ||
0fb4aa4b PA |
9430 | /* Decode a static tracepoint marker spec. */ |
9431 | ||
6c5b2ebe | 9432 | static std::vector<symtab_and_line> |
f00aae0f | 9433 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b PA |
9434 | { |
9435 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
0fb4aa4b | 9436 | struct cleanup *old_chain; |
f00aae0f KS |
9437 | const char *p = &(*arg_p)[3]; |
9438 | const char *endp; | |
0fb4aa4b PA |
9439 | char *marker_str; |
9440 | int i; | |
9441 | ||
f1735a53 | 9442 | p = skip_spaces (p); |
0fb4aa4b | 9443 | |
f1735a53 | 9444 | endp = skip_to_space (p); |
0fb4aa4b PA |
9445 | |
9446 | marker_str = savestring (p, endp - p); | |
9447 | old_chain = make_cleanup (xfree, marker_str); | |
9448 | ||
9449 | markers = target_static_tracepoint_markers_by_strid (marker_str); | |
9450 | if (VEC_empty(static_tracepoint_marker_p, markers)) | |
9451 | error (_("No known static tracepoint marker named %s"), marker_str); | |
9452 | ||
6c5b2ebe PA |
9453 | std::vector<symtab_and_line> sals; |
9454 | sals.reserve (VEC_length(static_tracepoint_marker_p, markers)); | |
0fb4aa4b | 9455 | |
6c5b2ebe | 9456 | for (i = 0; i < VEC_length(static_tracepoint_marker_p, markers); i++) |
0fb4aa4b PA |
9457 | { |
9458 | struct static_tracepoint_marker *marker; | |
9459 | ||
9460 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
9461 | ||
51abb421 | 9462 | symtab_and_line sal = find_pc_line (marker->address, 0); |
6c5b2ebe PA |
9463 | sal.pc = marker->address; |
9464 | sals.push_back (sal); | |
0fb4aa4b PA |
9465 | |
9466 | release_static_tracepoint_marker (marker); | |
9467 | } | |
9468 | ||
9469 | do_cleanups (old_chain); | |
9470 | ||
9471 | *arg_p = endp; | |
9472 | return sals; | |
9473 | } | |
9474 | ||
f00aae0f | 9475 | /* See breakpoint.h. */ |
0101ce28 | 9476 | |
8cdf0e15 VP |
9477 | int |
9478 | create_breakpoint (struct gdbarch *gdbarch, | |
e1e01040 PA |
9479 | const struct event_location *location, |
9480 | const char *cond_string, | |
9481 | int thread, const char *extra_string, | |
f00aae0f | 9482 | int parse_extra, |
0fb4aa4b | 9483 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9484 | int ignore_count, |
9485 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9486 | const struct breakpoint_ops *ops, |
44f238bb PA |
9487 | int from_tty, int enabled, int internal, |
9488 | unsigned flags) | |
c3f6f71d | 9489 | { |
7efd8fc2 | 9490 | struct linespec_result canonical; |
80c99de1 | 9491 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 9492 | int pending = 0; |
4a306c9a | 9493 | int task = 0; |
86b17b60 | 9494 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9495 | |
348d480f PA |
9496 | gdb_assert (ops != NULL); |
9497 | ||
f00aae0f KS |
9498 | /* If extra_string isn't useful, set it to NULL. */ |
9499 | if (extra_string != NULL && *extra_string == '\0') | |
9500 | extra_string = NULL; | |
9501 | ||
492d29ea | 9502 | TRY |
b78a6381 | 9503 | { |
f00aae0f | 9504 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 9505 | } |
492d29ea | 9506 | CATCH (e, RETURN_MASK_ERROR) |
0101ce28 | 9507 | { |
492d29ea PA |
9508 | /* If caller is interested in rc value from parse, set |
9509 | value. */ | |
9510 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9511 | { |
05ff989b AC |
9512 | /* If pending breakpoint support is turned off, throw |
9513 | error. */ | |
fa8d40ab JJ |
9514 | |
9515 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
9516 | throw_exception (e); |
9517 | ||
9518 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9519 | |
05ff989b AC |
9520 | /* If pending breakpoint support is auto query and the user |
9521 | selects no, then simply return the error code. */ | |
059fb39f | 9522 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9523 | && !nquery (_("Make %s pending on future shared library load? "), |
9524 | bptype_string (type_wanted))) | |
fd9b8c24 | 9525 | return 0; |
fa8d40ab | 9526 | |
05ff989b AC |
9527 | /* At this point, either the user was queried about setting |
9528 | a pending breakpoint and selected yes, or pending | |
9529 | breakpoint behavior is on and thus a pending breakpoint | |
9530 | is defaulted on behalf of the user. */ | |
f00aae0f | 9531 | pending = 1; |
0101ce28 | 9532 | } |
492d29ea PA |
9533 | else |
9534 | throw_exception (e); | |
0101ce28 | 9535 | } |
492d29ea PA |
9536 | END_CATCH |
9537 | ||
6c5b2ebe | 9538 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 9539 | return 0; |
c3f6f71d | 9540 | |
c3f6f71d JM |
9541 | /* ----------------------------- SNIP ----------------------------- |
9542 | Anything added to the cleanup chain beyond this point is assumed | |
9543 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
9544 | then the memory is not reclaimed. */ |
9545 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 9546 | |
c3f6f71d JM |
9547 | /* Resolve all line numbers to PC's and verify that the addresses |
9548 | are ok for the target. */ | |
0101ce28 | 9549 | if (!pending) |
f8eba3c6 | 9550 | { |
6c5b2ebe PA |
9551 | for (auto &lsal : canonical.lsals) |
9552 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 9553 | } |
c3f6f71d | 9554 | |
7a697b8d | 9555 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9556 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 9557 | { |
6c5b2ebe PA |
9558 | for (const auto &lsal : canonical.lsals) |
9559 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 9560 | } |
7a697b8d | 9561 | |
c3f6f71d JM |
9562 | /* Verify that condition can be parsed, before setting any |
9563 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9564 | breakpoint. */ |
0101ce28 | 9565 | if (!pending) |
c3f6f71d | 9566 | { |
e1e01040 PA |
9567 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
9568 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
9569 | ||
f00aae0f | 9570 | if (parse_extra) |
72b2ff0e | 9571 | { |
0878d0fa | 9572 | char *rest; |
e1e01040 | 9573 | char *cond; |
52d361e1 | 9574 | |
6c5b2ebe | 9575 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 9576 | |
0878d0fa YQ |
9577 | /* Here we only parse 'arg' to separate condition |
9578 | from thread number, so parsing in context of first | |
9579 | sal is OK. When setting the breakpoint we'll | |
9580 | re-parse it in context of each sal. */ | |
9581 | ||
6c5b2ebe | 9582 | find_condition_and_thread (extra_string, lsal.sals[0].pc, |
e1e01040 PA |
9583 | &cond, &thread, &task, &rest); |
9584 | cond_string_copy.reset (cond); | |
9585 | extra_string_copy.reset (rest); | |
72b2ff0e | 9586 | } |
2f069f6f | 9587 | else |
72b2ff0e | 9588 | { |
f00aae0f KS |
9589 | if (type_wanted != bp_dprintf |
9590 | && extra_string != NULL && *extra_string != '\0') | |
9591 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa YQ |
9592 | |
9593 | /* Create a private copy of condition string. */ | |
9594 | if (cond_string) | |
e1e01040 | 9595 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
9596 | /* Create a private copy of any extra string. */ |
9597 | if (extra_string) | |
e1e01040 | 9598 | extra_string_copy.reset (xstrdup (extra_string)); |
72b2ff0e | 9599 | } |
0fb4aa4b | 9600 | |
52d361e1 | 9601 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
9602 | std::move (cond_string_copy), |
9603 | std::move (extra_string_copy), | |
9604 | type_wanted, | |
d9b3f62e PA |
9605 | tempflag ? disp_del : disp_donttouch, |
9606 | thread, task, ignore_count, ops, | |
44f238bb | 9607 | from_tty, enabled, internal, flags); |
c906108c | 9608 | } |
0101ce28 JJ |
9609 | else |
9610 | { | |
a5e364af | 9611 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (type_wanted); |
bfccc43c | 9612 | |
a5e364af | 9613 | init_raw_breakpoint_without_location (b.get (), gdbarch, type_wanted, ops); |
d28cd78a | 9614 | b->location = copy_event_location (location); |
bfccc43c | 9615 | |
f00aae0f KS |
9616 | if (parse_extra) |
9617 | b->cond_string = NULL; | |
e12c7713 MK |
9618 | else |
9619 | { | |
9620 | /* Create a private copy of condition string. */ | |
e1e01040 | 9621 | b->cond_string = cond_string != NULL ? xstrdup (cond_string) : NULL; |
15630549 | 9622 | b->thread = thread; |
e12c7713 | 9623 | } |
f00aae0f KS |
9624 | |
9625 | /* Create a private copy of any extra string. */ | |
e1e01040 | 9626 | b->extra_string = extra_string != NULL ? xstrdup (extra_string) : NULL; |
0101ce28 | 9627 | b->ignore_count = ignore_count; |
0101ce28 | 9628 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9629 | b->condition_not_parsed = 1; |
41447f92 | 9630 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9631 | if ((type_wanted != bp_breakpoint |
9632 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9633 | b->pspace = current_program_space; |
8bea4e01 | 9634 | |
b270e6f9 | 9635 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
9636 | } |
9637 | ||
6c5b2ebe | 9638 | if (canonical.lsals.size () > 1) |
95a42b64 | 9639 | { |
3e43a32a MS |
9640 | warning (_("Multiple breakpoints were set.\nUse the " |
9641 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9642 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9643 | } |
9644 | ||
80c99de1 PA |
9645 | /* That's it. Discard the cleanups for data inserted into the |
9646 | breakpoint. */ | |
9647 | discard_cleanups (bkpt_chain); | |
217dc9e2 | 9648 | |
80c99de1 | 9649 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
44702360 | 9650 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9651 | |
9652 | return 1; | |
c3f6f71d | 9653 | } |
c906108c | 9654 | |
348d480f | 9655 | /* Set a breakpoint. |
72b2ff0e VP |
9656 | ARG is a string describing breakpoint address, |
9657 | condition, and thread. | |
9658 | FLAG specifies if a breakpoint is hardware on, | |
9659 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9660 | and BP_TEMPFLAG. */ | |
348d480f | 9661 | |
98deb0da | 9662 | static void |
f2fc3015 | 9663 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9664 | { |
72b2ff0e | 9665 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9666 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9667 | ? bp_hardware_breakpoint | |
9668 | : bp_breakpoint); | |
55aa24fb | 9669 | struct breakpoint_ops *ops; |
f00aae0f | 9670 | |
ffc2605c | 9671 | event_location_up location = string_to_event_location (&arg, current_language); |
55aa24fb SDJ |
9672 | |
9673 | /* Matching breakpoints on probes. */ | |
5b56227b | 9674 | if (location != NULL |
ffc2605c | 9675 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
9676 | ops = &bkpt_probe_breakpoint_ops; |
9677 | else | |
9678 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9679 | |
8cdf0e15 | 9680 | create_breakpoint (get_current_arch (), |
ffc2605c | 9681 | location.get (), |
f00aae0f | 9682 | NULL, 0, arg, 1 /* parse arg */, |
0fb4aa4b | 9683 | tempflag, type_wanted, |
8cdf0e15 VP |
9684 | 0 /* Ignore count */, |
9685 | pending_break_support, | |
55aa24fb | 9686 | ops, |
8cdf0e15 | 9687 | from_tty, |
84f4c1fe | 9688 | 1 /* enabled */, |
44f238bb PA |
9689 | 0 /* internal */, |
9690 | 0); | |
c906108c SS |
9691 | } |
9692 | ||
c906108c SS |
9693 | /* Helper function for break_command_1 and disassemble_command. */ |
9694 | ||
9695 | void | |
fba45db2 | 9696 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9697 | { |
9698 | CORE_ADDR pc; | |
9699 | ||
9700 | if (sal->pc == 0 && sal->symtab != NULL) | |
9701 | { | |
9702 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9703 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9704 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9705 | sal->pc = pc; |
6a048695 | 9706 | |
4a64f543 MS |
9707 | /* If this SAL corresponds to a breakpoint inserted using a line |
9708 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9709 | if (sal->explicit_line) |
059acae7 | 9710 | skip_prologue_sal (sal); |
c906108c SS |
9711 | } |
9712 | ||
9713 | if (sal->section == 0 && sal->symtab != NULL) | |
9714 | { | |
346d1dfe | 9715 | const struct blockvector *bv; |
3977b71f | 9716 | const struct block *b; |
c5aa993b | 9717 | struct symbol *sym; |
c906108c | 9718 | |
43f3e411 DE |
9719 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
9720 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
9721 | if (bv != NULL) |
9722 | { | |
7f0df278 | 9723 | sym = block_linkage_function (b); |
c906108c SS |
9724 | if (sym != NULL) |
9725 | { | |
eb822aa6 DE |
9726 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
9727 | sal->section = SYMBOL_OBJ_SECTION (SYMTAB_OBJFILE (sal->symtab), | |
9728 | sym); | |
c906108c SS |
9729 | } |
9730 | else | |
9731 | { | |
4a64f543 MS |
9732 | /* It really is worthwhile to have the section, so we'll |
9733 | just have to look harder. This case can be executed | |
9734 | if we have line numbers but no functions (as can | |
9735 | happen in assembly source). */ | |
c906108c | 9736 | |
5ed8105e | 9737 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9738 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9739 | |
5ed8105e | 9740 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9741 | if (msym.minsym) |
efd66ac6 | 9742 | sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
c906108c SS |
9743 | } |
9744 | } | |
9745 | } | |
9746 | } | |
9747 | ||
9748 | void | |
fba45db2 | 9749 | break_command (char *arg, int from_tty) |
c906108c | 9750 | { |
db107f19 | 9751 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9752 | } |
9753 | ||
c906108c | 9754 | void |
fba45db2 | 9755 | tbreak_command (char *arg, int from_tty) |
c906108c | 9756 | { |
db107f19 | 9757 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9758 | } |
9759 | ||
c906108c | 9760 | static void |
fba45db2 | 9761 | hbreak_command (char *arg, int from_tty) |
c906108c | 9762 | { |
db107f19 | 9763 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9764 | } |
9765 | ||
9766 | static void | |
fba45db2 | 9767 | thbreak_command (char *arg, int from_tty) |
c906108c | 9768 | { |
db107f19 | 9769 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9770 | } |
9771 | ||
9772 | static void | |
fba45db2 | 9773 | stop_command (char *arg, int from_tty) |
c906108c | 9774 | { |
a3f17187 | 9775 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9776 | Usage: stop in <function | address>\n\ |
a3f17187 | 9777 | stop at <line>\n")); |
c906108c SS |
9778 | } |
9779 | ||
9780 | static void | |
4495129a | 9781 | stopin_command (const char *arg, int from_tty) |
c906108c SS |
9782 | { |
9783 | int badInput = 0; | |
9784 | ||
c5aa993b | 9785 | if (arg == (char *) NULL) |
c906108c SS |
9786 | badInput = 1; |
9787 | else if (*arg != '*') | |
9788 | { | |
4495129a | 9789 | const char *argptr = arg; |
c906108c SS |
9790 | int hasColon = 0; |
9791 | ||
4a64f543 | 9792 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9793 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9794 | function/method name. */ |
c906108c | 9795 | while (*argptr && !hasColon) |
c5aa993b JM |
9796 | { |
9797 | hasColon = (*argptr == ':'); | |
9798 | argptr++; | |
9799 | } | |
c906108c SS |
9800 | |
9801 | if (hasColon) | |
c5aa993b | 9802 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9803 | else |
c5aa993b | 9804 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9805 | } |
9806 | ||
9807 | if (badInput) | |
a3f17187 | 9808 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9809 | else |
db107f19 | 9810 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9811 | } |
9812 | ||
9813 | static void | |
4495129a | 9814 | stopat_command (const char *arg, int from_tty) |
c906108c SS |
9815 | { |
9816 | int badInput = 0; | |
9817 | ||
c5aa993b | 9818 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
9819 | badInput = 1; |
9820 | else | |
9821 | { | |
4495129a | 9822 | const char *argptr = arg; |
c906108c SS |
9823 | int hasColon = 0; |
9824 | ||
4a64f543 MS |
9825 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9826 | it is probably a line number. */ | |
c906108c | 9827 | while (*argptr && !hasColon) |
c5aa993b JM |
9828 | { |
9829 | hasColon = (*argptr == ':'); | |
9830 | argptr++; | |
9831 | } | |
c906108c SS |
9832 | |
9833 | if (hasColon) | |
c5aa993b | 9834 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9835 | else |
c5aa993b | 9836 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9837 | } |
9838 | ||
9839 | if (badInput) | |
a3f17187 | 9840 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 9841 | else |
db107f19 | 9842 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9843 | } |
9844 | ||
e7e0cddf SS |
9845 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9846 | with a prewired command list consisting of a single output command, | |
9847 | built from extra arguments supplied on the dprintf command | |
9848 | line. */ | |
9849 | ||
da821c7b | 9850 | static void |
f2fc3015 | 9851 | dprintf_command (char *arg_in, int from_tty) |
e7e0cddf | 9852 | { |
f2fc3015 | 9853 | const char *arg = arg_in; |
ffc2605c | 9854 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f KS |
9855 | |
9856 | /* If non-NULL, ARG should have been advanced past the location; | |
9857 | the next character must be ','. */ | |
9858 | if (arg != NULL) | |
9859 | { | |
9860 | if (arg[0] != ',' || arg[1] == '\0') | |
9861 | error (_("Format string required")); | |
9862 | else | |
9863 | { | |
9864 | /* Skip the comma. */ | |
9865 | ++arg; | |
9866 | } | |
9867 | } | |
9868 | ||
e7e0cddf | 9869 | create_breakpoint (get_current_arch (), |
ffc2605c | 9870 | location.get (), |
f00aae0f | 9871 | NULL, 0, arg, 1 /* parse arg */, |
e7e0cddf SS |
9872 | 0, bp_dprintf, |
9873 | 0 /* Ignore count */, | |
9874 | pending_break_support, | |
9875 | &dprintf_breakpoint_ops, | |
9876 | from_tty, | |
9877 | 1 /* enabled */, | |
9878 | 0 /* internal */, | |
9879 | 0); | |
9880 | } | |
9881 | ||
d3ce09f5 SS |
9882 | static void |
9883 | agent_printf_command (char *arg, int from_tty) | |
9884 | { | |
9885 | error (_("May only run agent-printf on the target")); | |
9886 | } | |
9887 | ||
f1310107 TJB |
9888 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9889 | ranged breakpoints. */ | |
9890 | ||
9891 | static int | |
9892 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
9893 | struct address_space *aspace, | |
09ac7c10 TT |
9894 | CORE_ADDR bp_addr, |
9895 | const struct target_waitstatus *ws) | |
f1310107 | 9896 | { |
09ac7c10 | 9897 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9898 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9899 | return 0; |
9900 | ||
f1310107 TJB |
9901 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9902 | bl->length, aspace, bp_addr); | |
9903 | } | |
9904 | ||
9905 | /* Implement the "resources_needed" breakpoint_ops method for | |
9906 | ranged breakpoints. */ | |
9907 | ||
9908 | static int | |
9909 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9910 | { | |
9911 | return target_ranged_break_num_registers (); | |
9912 | } | |
9913 | ||
9914 | /* Implement the "print_it" breakpoint_ops method for | |
9915 | ranged breakpoints. */ | |
9916 | ||
9917 | static enum print_stop_action | |
348d480f | 9918 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9919 | { |
348d480f | 9920 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9921 | struct bp_location *bl = b->loc; |
79a45e25 | 9922 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9923 | |
9924 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9925 | ||
9926 | /* Ranged breakpoints have only one location. */ | |
9927 | gdb_assert (bl && bl->next == NULL); | |
9928 | ||
9929 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
9930 | |
9931 | maybe_print_thread_hit_breakpoint (uiout); | |
9932 | ||
f1310107 | 9933 | if (b->disposition == disp_del) |
112e8700 | 9934 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9935 | else |
112e8700 SM |
9936 | uiout->text ("Ranged breakpoint "); |
9937 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9938 | { |
112e8700 | 9939 | uiout->field_string ("reason", |
f1310107 | 9940 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 9941 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f1310107 | 9942 | } |
112e8700 SM |
9943 | uiout->field_int ("bkptno", b->number); |
9944 | uiout->text (", "); | |
f1310107 TJB |
9945 | |
9946 | return PRINT_SRC_AND_LOC; | |
9947 | } | |
9948 | ||
9949 | /* Implement the "print_one" breakpoint_ops method for | |
9950 | ranged breakpoints. */ | |
9951 | ||
9952 | static void | |
9953 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9954 | struct bp_location **last_loc) | |
9955 | { | |
9956 | struct bp_location *bl = b->loc; | |
9957 | struct value_print_options opts; | |
79a45e25 | 9958 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9959 | |
9960 | /* Ranged breakpoints have only one location. */ | |
9961 | gdb_assert (bl && bl->next == NULL); | |
9962 | ||
9963 | get_user_print_options (&opts); | |
9964 | ||
9965 | if (opts.addressprint) | |
9966 | /* We don't print the address range here, it will be printed later | |
9967 | by print_one_detail_ranged_breakpoint. */ | |
112e8700 | 9968 | uiout->field_skip ("addr"); |
f1310107 TJB |
9969 | annotate_field (5); |
9970 | print_breakpoint_location (b, bl); | |
9971 | *last_loc = bl; | |
9972 | } | |
9973 | ||
9974 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9975 | ranged breakpoints. */ | |
9976 | ||
9977 | static void | |
9978 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9979 | struct ui_out *uiout) | |
9980 | { | |
9981 | CORE_ADDR address_start, address_end; | |
9982 | struct bp_location *bl = b->loc; | |
d7e74731 | 9983 | string_file stb; |
f1310107 TJB |
9984 | |
9985 | gdb_assert (bl); | |
9986 | ||
9987 | address_start = bl->address; | |
9988 | address_end = address_start + bl->length - 1; | |
9989 | ||
112e8700 | 9990 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9991 | stb.printf ("[%s, %s]", |
9992 | print_core_address (bl->gdbarch, address_start), | |
9993 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9994 | uiout->field_stream ("addr", stb); |
9995 | uiout->text ("\n"); | |
f1310107 TJB |
9996 | } |
9997 | ||
9998 | /* Implement the "print_mention" breakpoint_ops method for | |
9999 | ranged breakpoints. */ | |
10000 | ||
10001 | static void | |
10002 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
10003 | { | |
10004 | struct bp_location *bl = b->loc; | |
79a45e25 | 10005 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
10006 | |
10007 | gdb_assert (bl); | |
10008 | gdb_assert (b->type == bp_hardware_breakpoint); | |
10009 | ||
112e8700 | 10010 | if (uiout->is_mi_like_p ()) |
f1310107 TJB |
10011 | return; |
10012 | ||
10013 | printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."), | |
10014 | b->number, paddress (bl->gdbarch, bl->address), | |
10015 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
10016 | } | |
10017 | ||
10018 | /* Implement the "print_recreate" breakpoint_ops method for | |
10019 | ranged breakpoints. */ | |
10020 | ||
10021 | static void | |
10022 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
10023 | { | |
f00aae0f | 10024 | fprintf_unfiltered (fp, "break-range %s, %s", |
d28cd78a TT |
10025 | event_location_to_string (b->location.get ()), |
10026 | event_location_to_string (b->location_range_end.get ())); | |
d9b3f62e | 10027 | print_recreate_thread (b, fp); |
f1310107 TJB |
10028 | } |
10029 | ||
10030 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
10031 | ||
2060206e | 10032 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
10033 | |
10034 | /* Find the address where the end of the breakpoint range should be | |
10035 | placed, given the SAL of the end of the range. This is so that if | |
10036 | the user provides a line number, the end of the range is set to the | |
10037 | last instruction of the given line. */ | |
10038 | ||
10039 | static CORE_ADDR | |
10040 | find_breakpoint_range_end (struct symtab_and_line sal) | |
10041 | { | |
10042 | CORE_ADDR end; | |
10043 | ||
10044 | /* If the user provided a PC value, use it. Otherwise, | |
10045 | find the address of the end of the given location. */ | |
10046 | if (sal.explicit_pc) | |
10047 | end = sal.pc; | |
10048 | else | |
10049 | { | |
10050 | int ret; | |
10051 | CORE_ADDR start; | |
10052 | ||
10053 | ret = find_line_pc_range (sal, &start, &end); | |
10054 | if (!ret) | |
10055 | error (_("Could not find location of the end of the range.")); | |
10056 | ||
10057 | /* find_line_pc_range returns the start of the next line. */ | |
10058 | end--; | |
10059 | } | |
10060 | ||
10061 | return end; | |
10062 | } | |
10063 | ||
10064 | /* Implement the "break-range" CLI command. */ | |
10065 | ||
10066 | static void | |
f2fc3015 | 10067 | break_range_command (char *arg_in, int from_tty) |
f1310107 | 10068 | { |
f2fc3015 TT |
10069 | const char *arg = arg_in; |
10070 | const char *arg_start; | |
10071 | char *addr_string_start; | |
f1310107 TJB |
10072 | struct linespec_result canonical_start, canonical_end; |
10073 | int bp_count, can_use_bp, length; | |
10074 | CORE_ADDR end; | |
10075 | struct breakpoint *b; | |
f1310107 TJB |
10076 | struct cleanup *cleanup_bkpt; |
10077 | ||
10078 | /* We don't support software ranged breakpoints. */ | |
10079 | if (target_ranged_break_num_registers () < 0) | |
10080 | error (_("This target does not support hardware ranged breakpoints.")); | |
10081 | ||
10082 | bp_count = hw_breakpoint_used_count (); | |
10083 | bp_count += target_ranged_break_num_registers (); | |
10084 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
10085 | bp_count, 0); | |
10086 | if (can_use_bp < 0) | |
10087 | error (_("Hardware breakpoints used exceeds limit.")); | |
10088 | ||
f8eba3c6 | 10089 | arg = skip_spaces (arg); |
f1310107 TJB |
10090 | if (arg == NULL || arg[0] == '\0') |
10091 | error(_("No address range specified.")); | |
10092 | ||
f8eba3c6 | 10093 | arg_start = arg; |
ffc2605c TT |
10094 | event_location_up start_location = string_to_event_location (&arg, |
10095 | current_language); | |
10096 | parse_breakpoint_sals (start_location.get (), &canonical_start); | |
f1310107 TJB |
10097 | |
10098 | if (arg[0] != ',') | |
10099 | error (_("Too few arguments.")); | |
6c5b2ebe | 10100 | else if (canonical_start.lsals.empty ()) |
f1310107 | 10101 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 10102 | |
6c5b2ebe | 10103 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 10104 | |
6c5b2ebe PA |
10105 | if (canonical_start.lsals.size () > 1 |
10106 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
10107 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10108 | ||
6c5b2ebe | 10109 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
f8eba3c6 | 10110 | addr_string_start = savestring (arg_start, arg - arg_start); |
16e802b9 | 10111 | cleanup_bkpt = make_cleanup (xfree, addr_string_start); |
f1310107 TJB |
10112 | |
10113 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 10114 | arg = skip_spaces (arg); |
f1310107 TJB |
10115 | |
10116 | /* Parse the end location. */ | |
10117 | ||
f1310107 TJB |
10118 | arg_start = arg; |
10119 | ||
f8eba3c6 | 10120 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
10121 | parse_breakpoint_sals because we need to specify the start location's |
10122 | symtab and line as the default symtab and line for the end of the | |
10123 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
10124 | where +14 means 14 lines from the start location. */ | |
ffc2605c TT |
10125 | event_location_up end_location = string_to_event_location (&arg, |
10126 | current_language); | |
10127 | decode_line_full (end_location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
10128 | sal_start.symtab, sal_start.line, |
10129 | &canonical_end, NULL, NULL); | |
10130 | ||
6c5b2ebe | 10131 | if (canonical_end.lsals.empty ()) |
f1310107 | 10132 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 10133 | |
6c5b2ebe PA |
10134 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
10135 | if (canonical_end.lsals.size () > 1 | |
10136 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
10137 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10138 | ||
6c5b2ebe | 10139 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
10140 | |
10141 | end = find_breakpoint_range_end (sal_end); | |
10142 | if (sal_start.pc > end) | |
177b42fe | 10143 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
10144 | |
10145 | length = end - sal_start.pc + 1; | |
10146 | if (length < 0) | |
10147 | /* Length overflowed. */ | |
10148 | error (_("Address range too large.")); | |
10149 | else if (length == 1) | |
10150 | { | |
10151 | /* This range is simple enough to be handled by | |
10152 | the `hbreak' command. */ | |
10153 | hbreak_command (addr_string_start, 1); | |
10154 | ||
10155 | do_cleanups (cleanup_bkpt); | |
10156 | ||
10157 | return; | |
10158 | } | |
10159 | ||
10160 | /* Now set up the breakpoint. */ | |
10161 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 10162 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
10163 | set_breakpoint_count (breakpoint_count + 1); |
10164 | b->number = breakpoint_count; | |
10165 | b->disposition = disp_donttouch; | |
d28cd78a TT |
10166 | b->location = std::move (start_location); |
10167 | b->location_range_end = std::move (end_location); | |
f1310107 TJB |
10168 | b->loc->length = length; |
10169 | ||
f8eba3c6 | 10170 | do_cleanups (cleanup_bkpt); |
f1310107 TJB |
10171 | |
10172 | mention (b); | |
8d3788bd | 10173 | observer_notify_breakpoint_created (b); |
44702360 | 10174 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
10175 | } |
10176 | ||
4a64f543 MS |
10177 | /* Return non-zero if EXP is verified as constant. Returned zero |
10178 | means EXP is variable. Also the constant detection may fail for | |
10179 | some constant expressions and in such case still falsely return | |
10180 | zero. */ | |
2e6e3d9c | 10181 | |
65d79d4b SDJ |
10182 | static int |
10183 | watchpoint_exp_is_const (const struct expression *exp) | |
10184 | { | |
10185 | int i = exp->nelts; | |
10186 | ||
10187 | while (i > 0) | |
10188 | { | |
10189 | int oplenp, argsp; | |
10190 | ||
10191 | /* We are only interested in the descriptor of each element. */ | |
10192 | operator_length (exp, i, &oplenp, &argsp); | |
10193 | i -= oplenp; | |
10194 | ||
10195 | switch (exp->elts[i].opcode) | |
10196 | { | |
10197 | case BINOP_ADD: | |
10198 | case BINOP_SUB: | |
10199 | case BINOP_MUL: | |
10200 | case BINOP_DIV: | |
10201 | case BINOP_REM: | |
10202 | case BINOP_MOD: | |
10203 | case BINOP_LSH: | |
10204 | case BINOP_RSH: | |
10205 | case BINOP_LOGICAL_AND: | |
10206 | case BINOP_LOGICAL_OR: | |
10207 | case BINOP_BITWISE_AND: | |
10208 | case BINOP_BITWISE_IOR: | |
10209 | case BINOP_BITWISE_XOR: | |
10210 | case BINOP_EQUAL: | |
10211 | case BINOP_NOTEQUAL: | |
10212 | case BINOP_LESS: | |
10213 | case BINOP_GTR: | |
10214 | case BINOP_LEQ: | |
10215 | case BINOP_GEQ: | |
10216 | case BINOP_REPEAT: | |
10217 | case BINOP_COMMA: | |
10218 | case BINOP_EXP: | |
10219 | case BINOP_MIN: | |
10220 | case BINOP_MAX: | |
10221 | case BINOP_INTDIV: | |
10222 | case BINOP_CONCAT: | |
65d79d4b SDJ |
10223 | case TERNOP_COND: |
10224 | case TERNOP_SLICE: | |
65d79d4b SDJ |
10225 | |
10226 | case OP_LONG: | |
10227 | case OP_DOUBLE: | |
10228 | case OP_DECFLOAT: | |
10229 | case OP_LAST: | |
10230 | case OP_COMPLEX: | |
10231 | case OP_STRING: | |
65d79d4b SDJ |
10232 | case OP_ARRAY: |
10233 | case OP_TYPE: | |
608b4967 TT |
10234 | case OP_TYPEOF: |
10235 | case OP_DECLTYPE: | |
6e72ca20 | 10236 | case OP_TYPEID: |
65d79d4b SDJ |
10237 | case OP_NAME: |
10238 | case OP_OBJC_NSSTRING: | |
10239 | ||
10240 | case UNOP_NEG: | |
10241 | case UNOP_LOGICAL_NOT: | |
10242 | case UNOP_COMPLEMENT: | |
10243 | case UNOP_ADDR: | |
10244 | case UNOP_HIGH: | |
aeaa2474 | 10245 | case UNOP_CAST: |
9eaf6705 TT |
10246 | |
10247 | case UNOP_CAST_TYPE: | |
10248 | case UNOP_REINTERPRET_CAST: | |
10249 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
10250 | /* Unary, binary and ternary operators: We have to check |
10251 | their operands. If they are constant, then so is the | |
10252 | result of that operation. For instance, if A and B are | |
10253 | determined to be constants, then so is "A + B". | |
10254 | ||
10255 | UNOP_IND is one exception to the rule above, because the | |
10256 | value of *ADDR is not necessarily a constant, even when | |
10257 | ADDR is. */ | |
65d79d4b SDJ |
10258 | break; |
10259 | ||
10260 | case OP_VAR_VALUE: | |
10261 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 10262 | |
65d79d4b | 10263 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
10264 | possible that a buggy compiler could mark a variable as |
10265 | constant even when it is not, and TYPE_CONST would return | |
10266 | true in this case, while SYMBOL_CLASS wouldn't. | |
10267 | ||
10268 | We also have to check for function symbols because they | |
10269 | are always constant. */ | |
65d79d4b SDJ |
10270 | { |
10271 | struct symbol *s = exp->elts[i + 2].symbol; | |
10272 | ||
10273 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
10274 | && SYMBOL_CLASS (s) != LOC_CONST | |
10275 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
10276 | return 0; | |
10277 | break; | |
10278 | } | |
10279 | ||
10280 | /* The default action is to return 0 because we are using | |
10281 | the optimistic approach here: If we don't know something, | |
10282 | then it is not a constant. */ | |
10283 | default: | |
10284 | return 0; | |
10285 | } | |
10286 | } | |
10287 | ||
10288 | return 1; | |
10289 | } | |
10290 | ||
c1fc2657 | 10291 | /* Watchpoint destructor. */ |
3a5c3e22 | 10292 | |
c1fc2657 | 10293 | watchpoint::~watchpoint () |
3a5c3e22 | 10294 | { |
c1fc2657 SM |
10295 | xfree (this->exp_string); |
10296 | xfree (this->exp_string_reparse); | |
10297 | value_free (this->val); | |
3a5c3e22 PA |
10298 | } |
10299 | ||
348d480f PA |
10300 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10301 | ||
10302 | static void | |
10303 | re_set_watchpoint (struct breakpoint *b) | |
10304 | { | |
3a5c3e22 PA |
10305 | struct watchpoint *w = (struct watchpoint *) b; |
10306 | ||
348d480f PA |
10307 | /* Watchpoint can be either on expression using entirely global |
10308 | variables, or it can be on local variables. | |
10309 | ||
10310 | Watchpoints of the first kind are never auto-deleted, and even | |
10311 | persist across program restarts. Since they can use variables | |
10312 | from shared libraries, we need to reparse expression as libraries | |
10313 | are loaded and unloaded. | |
10314 | ||
10315 | Watchpoints on local variables can also change meaning as result | |
10316 | of solib event. For example, if a watchpoint uses both a local | |
10317 | and a global variables in expression, it's a local watchpoint, | |
10318 | but unloading of a shared library will make the expression | |
10319 | invalid. This is not a very common use case, but we still | |
10320 | re-evaluate expression, to avoid surprises to the user. | |
10321 | ||
10322 | Note that for local watchpoints, we re-evaluate it only if | |
10323 | watchpoints frame id is still valid. If it's not, it means the | |
10324 | watchpoint is out of scope and will be deleted soon. In fact, | |
10325 | I'm not sure we'll ever be called in this case. | |
10326 | ||
10327 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10328 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10329 | |
3a5c3e22 PA |
10330 | Don't do anything about disabled watchpoints, since they will be |
10331 | reevaluated again when enabled. */ | |
10332 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10333 | } |
10334 | ||
77b06cd7 TJB |
10335 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10336 | ||
10337 | static int | |
10338 | insert_watchpoint (struct bp_location *bl) | |
10339 | { | |
3a5c3e22 PA |
10340 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10341 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10342 | |
10343 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10344 | w->cond_exp.get ()); |
77b06cd7 TJB |
10345 | } |
10346 | ||
10347 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10348 | ||
10349 | static int | |
73971819 | 10350 | remove_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
77b06cd7 | 10351 | { |
3a5c3e22 PA |
10352 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10353 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10354 | |
10355 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10356 | w->cond_exp.get ()); |
e09342b5 TJB |
10357 | } |
10358 | ||
e09342b5 | 10359 | static int |
348d480f | 10360 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
09ac7c10 TT |
10361 | struct address_space *aspace, CORE_ADDR bp_addr, |
10362 | const struct target_waitstatus *ws) | |
e09342b5 | 10363 | { |
348d480f | 10364 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10365 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10366 | |
348d480f PA |
10367 | /* Continuable hardware watchpoints are treated as non-existent if the |
10368 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10369 | some data address). Otherwise gdb won't stop on a break instruction | |
10370 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10371 | been defined. Also skip watchpoints which we know did not trigger | |
10372 | (did not match the data address). */ | |
10373 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10374 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10375 | return 0; |
9c06b0b4 | 10376 | |
348d480f | 10377 | return 1; |
9c06b0b4 TJB |
10378 | } |
10379 | ||
348d480f PA |
10380 | static void |
10381 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10382 | { |
348d480f | 10383 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10384 | |
348d480f | 10385 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10386 | } |
10387 | ||
10388 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10389 | hardware watchpoints. */ |
9c06b0b4 TJB |
10390 | |
10391 | static int | |
348d480f | 10392 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10393 | { |
3a5c3e22 PA |
10394 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10395 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10396 | |
10397 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10398 | } |
10399 | ||
10400 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10401 | hardware watchpoints. */ |
9c06b0b4 TJB |
10402 | |
10403 | static int | |
348d480f | 10404 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10405 | { |
efa80663 PA |
10406 | /* Read and access watchpoints only work with hardware support. */ |
10407 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10408 | } |
10409 | ||
9c06b0b4 | 10410 | static enum print_stop_action |
348d480f | 10411 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10412 | { |
348d480f | 10413 | struct breakpoint *b; |
348d480f | 10414 | enum print_stop_action result; |
3a5c3e22 | 10415 | struct watchpoint *w; |
79a45e25 | 10416 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10417 | |
10418 | gdb_assert (bs->bp_location_at != NULL); | |
10419 | ||
348d480f | 10420 | b = bs->breakpoint_at; |
3a5c3e22 | 10421 | w = (struct watchpoint *) b; |
348d480f | 10422 | |
f303dbd6 PA |
10423 | annotate_watchpoint (b->number); |
10424 | maybe_print_thread_hit_breakpoint (uiout); | |
10425 | ||
d7e74731 PA |
10426 | string_file stb; |
10427 | ||
76f9c9cf | 10428 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
10429 | switch (b->type) |
10430 | { | |
348d480f | 10431 | case bp_watchpoint: |
9c06b0b4 | 10432 | case bp_hardware_watchpoint: |
112e8700 SM |
10433 | if (uiout->is_mi_like_p ()) |
10434 | uiout->field_string | |
10435 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 10436 | mention (b); |
76f9c9cf | 10437 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10438 | uiout->text ("\nOld value = "); |
d7e74731 | 10439 | watchpoint_value_print (bs->old_val, &stb); |
112e8700 SM |
10440 | uiout->field_stream ("old", stb); |
10441 | uiout->text ("\nNew value = "); | |
d7e74731 | 10442 | watchpoint_value_print (w->val, &stb); |
112e8700 SM |
10443 | uiout->field_stream ("new", stb); |
10444 | uiout->text ("\n"); | |
348d480f PA |
10445 | /* More than one watchpoint may have been triggered. */ |
10446 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10447 | break; |
10448 | ||
10449 | case bp_read_watchpoint: | |
112e8700 SM |
10450 | if (uiout->is_mi_like_p ()) |
10451 | uiout->field_string | |
10452 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 10453 | mention (b); |
76f9c9cf | 10454 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10455 | uiout->text ("\nValue = "); |
d7e74731 | 10456 | watchpoint_value_print (w->val, &stb); |
112e8700 SM |
10457 | uiout->field_stream ("value", stb); |
10458 | uiout->text ("\n"); | |
348d480f | 10459 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10460 | break; |
10461 | ||
10462 | case bp_access_watchpoint: | |
348d480f PA |
10463 | if (bs->old_val != NULL) |
10464 | { | |
112e8700 SM |
10465 | if (uiout->is_mi_like_p ()) |
10466 | uiout->field_string | |
10467 | ("reason", | |
348d480f PA |
10468 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10469 | mention (b); | |
76f9c9cf | 10470 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10471 | uiout->text ("\nOld value = "); |
d7e74731 | 10472 | watchpoint_value_print (bs->old_val, &stb); |
112e8700 SM |
10473 | uiout->field_stream ("old", stb); |
10474 | uiout->text ("\nNew value = "); | |
348d480f PA |
10475 | } |
10476 | else | |
10477 | { | |
10478 | mention (b); | |
112e8700 SM |
10479 | if (uiout->is_mi_like_p ()) |
10480 | uiout->field_string | |
10481 | ("reason", | |
348d480f | 10482 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 10483 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10484 | uiout->text ("\nValue = "); |
348d480f | 10485 | } |
d7e74731 | 10486 | watchpoint_value_print (w->val, &stb); |
112e8700 SM |
10487 | uiout->field_stream ("new", stb); |
10488 | uiout->text ("\n"); | |
348d480f | 10489 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10490 | break; |
10491 | default: | |
348d480f | 10492 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10493 | } |
10494 | ||
348d480f PA |
10495 | return result; |
10496 | } | |
10497 | ||
10498 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10499 | watchpoints. */ | |
10500 | ||
10501 | static void | |
10502 | print_mention_watchpoint (struct breakpoint *b) | |
10503 | { | |
3a5c3e22 | 10504 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10505 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10506 | const char *tuple_name; |
348d480f PA |
10507 | |
10508 | switch (b->type) | |
10509 | { | |
10510 | case bp_watchpoint: | |
112e8700 | 10511 | uiout->text ("Watchpoint "); |
46b9c129 | 10512 | tuple_name = "wpt"; |
348d480f PA |
10513 | break; |
10514 | case bp_hardware_watchpoint: | |
112e8700 | 10515 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 10516 | tuple_name = "wpt"; |
348d480f PA |
10517 | break; |
10518 | case bp_read_watchpoint: | |
112e8700 | 10519 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 10520 | tuple_name = "hw-rwpt"; |
348d480f PA |
10521 | break; |
10522 | case bp_access_watchpoint: | |
112e8700 | 10523 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 10524 | tuple_name = "hw-awpt"; |
348d480f PA |
10525 | break; |
10526 | default: | |
10527 | internal_error (__FILE__, __LINE__, | |
10528 | _("Invalid hardware watchpoint type.")); | |
10529 | } | |
10530 | ||
46b9c129 | 10531 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10532 | uiout->field_int ("number", b->number); |
10533 | uiout->text (": "); | |
10534 | uiout->field_string ("exp", w->exp_string); | |
348d480f PA |
10535 | } |
10536 | ||
10537 | /* Implement the "print_recreate" breakpoint_ops method for | |
10538 | watchpoints. */ | |
10539 | ||
10540 | static void | |
10541 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10542 | { | |
3a5c3e22 PA |
10543 | struct watchpoint *w = (struct watchpoint *) b; |
10544 | ||
348d480f PA |
10545 | switch (b->type) |
10546 | { | |
10547 | case bp_watchpoint: | |
10548 | case bp_hardware_watchpoint: | |
10549 | fprintf_unfiltered (fp, "watch"); | |
10550 | break; | |
10551 | case bp_read_watchpoint: | |
10552 | fprintf_unfiltered (fp, "rwatch"); | |
10553 | break; | |
10554 | case bp_access_watchpoint: | |
10555 | fprintf_unfiltered (fp, "awatch"); | |
10556 | break; | |
10557 | default: | |
10558 | internal_error (__FILE__, __LINE__, | |
10559 | _("Invalid watchpoint type.")); | |
10560 | } | |
10561 | ||
3a5c3e22 | 10562 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10563 | print_recreate_thread (b, fp); |
348d480f PA |
10564 | } |
10565 | ||
427cd150 TT |
10566 | /* Implement the "explains_signal" breakpoint_ops method for |
10567 | watchpoints. */ | |
10568 | ||
47591c29 | 10569 | static int |
427cd150 TT |
10570 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10571 | { | |
10572 | /* A software watchpoint cannot cause a signal other than | |
10573 | GDB_SIGNAL_TRAP. */ | |
10574 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10575 | return 0; |
427cd150 | 10576 | |
47591c29 | 10577 | return 1; |
427cd150 TT |
10578 | } |
10579 | ||
348d480f PA |
10580 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10581 | ||
2060206e | 10582 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10583 | |
10584 | /* Implement the "insert" breakpoint_ops method for | |
10585 | masked hardware watchpoints. */ | |
10586 | ||
10587 | static int | |
10588 | insert_masked_watchpoint (struct bp_location *bl) | |
10589 | { | |
3a5c3e22 PA |
10590 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10591 | ||
10592 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10593 | bl->watchpoint_type); |
10594 | } | |
10595 | ||
10596 | /* Implement the "remove" breakpoint_ops method for | |
10597 | masked hardware watchpoints. */ | |
10598 | ||
10599 | static int | |
73971819 | 10600 | remove_masked_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f | 10601 | { |
3a5c3e22 PA |
10602 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10603 | ||
10604 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10605 | bl->watchpoint_type); |
10606 | } | |
10607 | ||
10608 | /* Implement the "resources_needed" breakpoint_ops method for | |
10609 | masked hardware watchpoints. */ | |
10610 | ||
10611 | static int | |
10612 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10613 | { | |
3a5c3e22 PA |
10614 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10615 | ||
10616 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10617 | } |
10618 | ||
10619 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10620 | masked hardware watchpoints. */ | |
10621 | ||
10622 | static int | |
10623 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10624 | { | |
10625 | return 0; | |
10626 | } | |
10627 | ||
10628 | /* Implement the "print_it" breakpoint_ops method for | |
10629 | masked hardware watchpoints. */ | |
10630 | ||
10631 | static enum print_stop_action | |
10632 | print_it_masked_watchpoint (bpstat bs) | |
10633 | { | |
10634 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10635 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10636 | |
10637 | /* Masked watchpoints have only one location. */ | |
10638 | gdb_assert (b->loc && b->loc->next == NULL); | |
10639 | ||
f303dbd6 PA |
10640 | annotate_watchpoint (b->number); |
10641 | maybe_print_thread_hit_breakpoint (uiout); | |
10642 | ||
348d480f PA |
10643 | switch (b->type) |
10644 | { | |
10645 | case bp_hardware_watchpoint: | |
112e8700 SM |
10646 | if (uiout->is_mi_like_p ()) |
10647 | uiout->field_string | |
10648 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10649 | break; |
10650 | ||
10651 | case bp_read_watchpoint: | |
112e8700 SM |
10652 | if (uiout->is_mi_like_p ()) |
10653 | uiout->field_string | |
10654 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10655 | break; |
10656 | ||
10657 | case bp_access_watchpoint: | |
112e8700 SM |
10658 | if (uiout->is_mi_like_p ()) |
10659 | uiout->field_string | |
10660 | ("reason", | |
348d480f PA |
10661 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10662 | break; | |
10663 | default: | |
10664 | internal_error (__FILE__, __LINE__, | |
10665 | _("Invalid hardware watchpoint type.")); | |
10666 | } | |
10667 | ||
10668 | mention (b); | |
112e8700 | 10669 | uiout->text (_("\n\ |
9c06b0b4 TJB |
10670 | Check the underlying instruction at PC for the memory\n\ |
10671 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 10672 | uiout->text ("\n"); |
9c06b0b4 TJB |
10673 | |
10674 | /* More than one watchpoint may have been triggered. */ | |
10675 | return PRINT_UNKNOWN; | |
10676 | } | |
10677 | ||
10678 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10679 | masked hardware watchpoints. */ | |
10680 | ||
10681 | static void | |
10682 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10683 | struct ui_out *uiout) | |
10684 | { | |
3a5c3e22 PA |
10685 | struct watchpoint *w = (struct watchpoint *) b; |
10686 | ||
9c06b0b4 TJB |
10687 | /* Masked watchpoints have only one location. */ |
10688 | gdb_assert (b->loc && b->loc->next == NULL); | |
10689 | ||
112e8700 SM |
10690 | uiout->text ("\tmask "); |
10691 | uiout->field_core_addr ("mask", b->loc->gdbarch, w->hw_wp_mask); | |
10692 | uiout->text ("\n"); | |
9c06b0b4 TJB |
10693 | } |
10694 | ||
10695 | /* Implement the "print_mention" breakpoint_ops method for | |
10696 | masked hardware watchpoints. */ | |
10697 | ||
10698 | static void | |
10699 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10700 | { | |
3a5c3e22 | 10701 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10702 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10703 | const char *tuple_name; |
9c06b0b4 TJB |
10704 | |
10705 | switch (b->type) | |
10706 | { | |
10707 | case bp_hardware_watchpoint: | |
112e8700 | 10708 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 10709 | tuple_name = "wpt"; |
9c06b0b4 TJB |
10710 | break; |
10711 | case bp_read_watchpoint: | |
112e8700 | 10712 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 10713 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
10714 | break; |
10715 | case bp_access_watchpoint: | |
112e8700 | 10716 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 10717 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
10718 | break; |
10719 | default: | |
10720 | internal_error (__FILE__, __LINE__, | |
10721 | _("Invalid hardware watchpoint type.")); | |
10722 | } | |
10723 | ||
46b9c129 | 10724 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10725 | uiout->field_int ("number", b->number); |
10726 | uiout->text (": "); | |
10727 | uiout->field_string ("exp", w->exp_string); | |
9c06b0b4 TJB |
10728 | } |
10729 | ||
10730 | /* Implement the "print_recreate" breakpoint_ops method for | |
10731 | masked hardware watchpoints. */ | |
10732 | ||
10733 | static void | |
10734 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10735 | { | |
3a5c3e22 | 10736 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10737 | char tmp[40]; |
10738 | ||
10739 | switch (b->type) | |
10740 | { | |
10741 | case bp_hardware_watchpoint: | |
10742 | fprintf_unfiltered (fp, "watch"); | |
10743 | break; | |
10744 | case bp_read_watchpoint: | |
10745 | fprintf_unfiltered (fp, "rwatch"); | |
10746 | break; | |
10747 | case bp_access_watchpoint: | |
10748 | fprintf_unfiltered (fp, "awatch"); | |
10749 | break; | |
10750 | default: | |
10751 | internal_error (__FILE__, __LINE__, | |
10752 | _("Invalid hardware watchpoint type.")); | |
10753 | } | |
10754 | ||
3a5c3e22 PA |
10755 | sprintf_vma (tmp, w->hw_wp_mask); |
10756 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10757 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10758 | } |
10759 | ||
10760 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10761 | ||
2060206e | 10762 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10763 | |
10764 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10765 | ||
10766 | static int | |
10767 | is_masked_watchpoint (const struct breakpoint *b) | |
10768 | { | |
10769 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10770 | } | |
10771 | ||
53a5351d JM |
10772 | /* accessflag: hw_write: watch write, |
10773 | hw_read: watch read, | |
10774 | hw_access: watch access (read or write) */ | |
c906108c | 10775 | static void |
bbc13ae3 | 10776 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 10777 | int just_location, int internal) |
c906108c | 10778 | { |
c1fc2657 | 10779 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 10780 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 10781 | struct value *val, *mark, *result; |
bb9d5f81 | 10782 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
10783 | const char *exp_start = NULL; |
10784 | const char *exp_end = NULL; | |
10785 | const char *tok, *end_tok; | |
9c06b0b4 | 10786 | int toklen = -1; |
bbc13ae3 KS |
10787 | const char *cond_start = NULL; |
10788 | const char *cond_end = NULL; | |
c906108c | 10789 | enum bptype bp_type; |
37e4754d | 10790 | int thread = -1; |
0cf6dd15 | 10791 | int pc = 0; |
9c06b0b4 TJB |
10792 | /* Flag to indicate whether we are going to use masks for |
10793 | the hardware watchpoint. */ | |
10794 | int use_mask = 0; | |
10795 | CORE_ADDR mask = 0; | |
bbc13ae3 KS |
10796 | char *expression; |
10797 | struct cleanup *back_to; | |
c906108c | 10798 | |
37e4754d LM |
10799 | /* Make sure that we actually have parameters to parse. */ |
10800 | if (arg != NULL && arg[0] != '\0') | |
10801 | { | |
bbc13ae3 KS |
10802 | const char *value_start; |
10803 | ||
10804 | exp_end = arg + strlen (arg); | |
37e4754d | 10805 | |
9c06b0b4 TJB |
10806 | /* Look for "parameter value" pairs at the end |
10807 | of the arguments string. */ | |
bbc13ae3 | 10808 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10809 | { |
10810 | /* Skip whitespace at the end of the argument list. */ | |
10811 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10812 | tok--; | |
10813 | ||
10814 | /* Find the beginning of the last token. | |
10815 | This is the value of the parameter. */ | |
10816 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10817 | tok--; | |
10818 | value_start = tok + 1; | |
10819 | ||
10820 | /* Skip whitespace. */ | |
10821 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10822 | tok--; | |
10823 | ||
10824 | end_tok = tok; | |
10825 | ||
10826 | /* Find the beginning of the second to last token. | |
10827 | This is the parameter itself. */ | |
10828 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10829 | tok--; | |
10830 | tok++; | |
10831 | toklen = end_tok - tok + 1; | |
10832 | ||
61012eef | 10833 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 10834 | { |
5d5658a1 | 10835 | struct thread_info *thr; |
9c06b0b4 TJB |
10836 | /* At this point we've found a "thread" token, which means |
10837 | the user is trying to set a watchpoint that triggers | |
10838 | only in a specific thread. */ | |
5d5658a1 | 10839 | const char *endp; |
37e4754d | 10840 | |
9c06b0b4 TJB |
10841 | if (thread != -1) |
10842 | error(_("You can specify only one thread.")); | |
37e4754d | 10843 | |
9c06b0b4 | 10844 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 10845 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 10846 | |
5d5658a1 | 10847 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 10848 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 10849 | invalid_thread_id_error (value_start); |
9c06b0b4 | 10850 | |
5d5658a1 | 10851 | thread = thr->global_num; |
9c06b0b4 | 10852 | } |
61012eef | 10853 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
10854 | { |
10855 | /* We've found a "mask" token, which means the user wants to | |
10856 | create a hardware watchpoint that is going to have the mask | |
10857 | facility. */ | |
10858 | struct value *mask_value, *mark; | |
37e4754d | 10859 | |
9c06b0b4 TJB |
10860 | if (use_mask) |
10861 | error(_("You can specify only one mask.")); | |
37e4754d | 10862 | |
9c06b0b4 | 10863 | use_mask = just_location = 1; |
37e4754d | 10864 | |
9c06b0b4 TJB |
10865 | mark = value_mark (); |
10866 | mask_value = parse_to_comma_and_eval (&value_start); | |
10867 | mask = value_as_address (mask_value); | |
10868 | value_free_to_mark (mark); | |
10869 | } | |
10870 | else | |
10871 | /* We didn't recognize what we found. We should stop here. */ | |
10872 | break; | |
37e4754d | 10873 | |
9c06b0b4 TJB |
10874 | /* Truncate the string and get rid of the "parameter value" pair before |
10875 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10876 | exp_end = tok; |
9c06b0b4 | 10877 | } |
37e4754d | 10878 | } |
bbc13ae3 KS |
10879 | else |
10880 | exp_end = arg; | |
37e4754d | 10881 | |
bbc13ae3 KS |
10882 | /* Parse the rest of the arguments. From here on out, everything |
10883 | is in terms of a newly allocated string instead of the original | |
10884 | ARG. */ | |
c906108c | 10885 | innermost_block = NULL; |
bbc13ae3 KS |
10886 | expression = savestring (arg, exp_end - arg); |
10887 | back_to = make_cleanup (xfree, expression); | |
10888 | exp_start = arg = expression; | |
4d01a485 | 10889 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0); |
c906108c | 10890 | exp_end = arg; |
fa8a61dc TT |
10891 | /* Remove trailing whitespace from the expression before saving it. |
10892 | This makes the eventual display of the expression string a bit | |
10893 | prettier. */ | |
10894 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10895 | --exp_end; | |
10896 | ||
65d79d4b | 10897 | /* Checking if the expression is not constant. */ |
4d01a485 | 10898 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10899 | { |
10900 | int len; | |
10901 | ||
10902 | len = exp_end - exp_start; | |
10903 | while (len > 0 && isspace (exp_start[len - 1])) | |
10904 | len--; | |
10905 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10906 | } | |
10907 | ||
c906108c SS |
10908 | exp_valid_block = innermost_block; |
10909 | mark = value_mark (); | |
4d01a485 | 10910 | fetch_subexp_value (exp.get (), &pc, &val, &result, NULL, just_location); |
06a64a0b | 10911 | |
bb9d5f81 PP |
10912 | if (val != NULL && just_location) |
10913 | { | |
10914 | saved_bitpos = value_bitpos (val); | |
10915 | saved_bitsize = value_bitsize (val); | |
10916 | } | |
10917 | ||
06a64a0b TT |
10918 | if (just_location) |
10919 | { | |
9c06b0b4 TJB |
10920 | int ret; |
10921 | ||
06a64a0b | 10922 | exp_valid_block = NULL; |
a1442452 | 10923 | val = value_addr (result); |
06a64a0b TT |
10924 | release_value (val); |
10925 | value_free_to_mark (mark); | |
9c06b0b4 TJB |
10926 | |
10927 | if (use_mask) | |
10928 | { | |
10929 | ret = target_masked_watch_num_registers (value_as_address (val), | |
10930 | mask); | |
10931 | if (ret == -1) | |
10932 | error (_("This target does not support masked watchpoints.")); | |
10933 | else if (ret == -2) | |
10934 | error (_("Invalid mask or memory region.")); | |
10935 | } | |
06a64a0b TT |
10936 | } |
10937 | else if (val != NULL) | |
fa4727a6 | 10938 | release_value (val); |
c906108c | 10939 | |
f1735a53 TT |
10940 | tok = skip_spaces (arg); |
10941 | end_tok = skip_to_space (tok); | |
c906108c SS |
10942 | |
10943 | toklen = end_tok - tok; | |
10944 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10945 | { | |
60e1c644 | 10946 | innermost_block = NULL; |
c906108c | 10947 | tok = cond_start = end_tok + 1; |
4d01a485 | 10948 | parse_exp_1 (&tok, 0, 0, 0); |
60e1c644 PA |
10949 | |
10950 | /* The watchpoint expression may not be local, but the condition | |
10951 | may still be. E.g.: `watch global if local > 0'. */ | |
10952 | cond_exp_valid_block = innermost_block; | |
10953 | ||
c906108c SS |
10954 | cond_end = tok; |
10955 | } | |
10956 | if (*tok) | |
8a3fe4f8 | 10957 | error (_("Junk at end of command.")); |
c906108c | 10958 | |
441d7c93 PA |
10959 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10960 | ||
10961 | /* Save this because create_internal_breakpoint below invalidates | |
10962 | 'wp_frame'. */ | |
10963 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10964 | |
10965 | /* If the expression is "local", then set up a "watchpoint scope" | |
10966 | breakpoint at the point where we've left the scope of the watchpoint | |
10967 | expression. Create the scope breakpoint before the watchpoint, so | |
10968 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10969 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10970 | { |
441d7c93 PA |
10971 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10972 | ||
10973 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10974 | { |
441d7c93 PA |
10975 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10976 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10977 | ||
edb3359d | 10978 | scope_breakpoint |
441d7c93 | 10979 | = create_internal_breakpoint (caller_arch, caller_pc, |
06edf0c0 PA |
10980 | bp_watchpoint_scope, |
10981 | &momentary_breakpoint_ops); | |
d983da9c | 10982 | |
441d7c93 PA |
10983 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10984 | wp_frame = NULL; | |
10985 | ||
edb3359d | 10986 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10987 | |
edb3359d DJ |
10988 | /* Automatically delete the breakpoint when it hits. */ |
10989 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10990 | |
edb3359d | 10991 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10992 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10993 | |
edb3359d | 10994 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10995 | scope_breakpoint->loc->gdbarch = caller_arch; |
10996 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10997 | scope_breakpoint->loc->address |
a6d9a66e UW |
10998 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10999 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
11000 | scope_breakpoint->type); |
11001 | } | |
d983da9c DJ |
11002 | } |
11003 | ||
e8369a73 AB |
11004 | /* Now set up the breakpoint. We create all watchpoints as hardware |
11005 | watchpoints here even if hardware watchpoints are turned off, a call | |
11006 | to update_watchpoint later in this function will cause the type to | |
11007 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
11008 | ||
11009 | if (accessflag == hw_read) | |
11010 | bp_type = bp_read_watchpoint; | |
11011 | else if (accessflag == hw_access) | |
11012 | bp_type = bp_access_watchpoint; | |
11013 | else | |
11014 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 11015 | |
b270e6f9 | 11016 | std::unique_ptr<watchpoint> w (new watchpoint ()); |
c1fc2657 | 11017 | |
348d480f | 11018 | if (use_mask) |
b270e6f9 | 11019 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 11020 | &masked_watchpoint_breakpoint_ops); |
348d480f | 11021 | else |
b270e6f9 | 11022 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 11023 | &watchpoint_breakpoint_ops); |
c1fc2657 SM |
11024 | w->thread = thread; |
11025 | w->disposition = disp_donttouch; | |
11026 | w->pspace = current_program_space; | |
b22e99fd | 11027 | w->exp = std::move (exp); |
3a5c3e22 PA |
11028 | w->exp_valid_block = exp_valid_block; |
11029 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
11030 | if (just_location) |
11031 | { | |
11032 | struct type *t = value_type (val); | |
11033 | CORE_ADDR addr = value_as_address (val); | |
06a64a0b | 11034 | |
43cc5389 TT |
11035 | w->exp_string_reparse |
11036 | = current_language->la_watch_location_expression (t, addr).release (); | |
06a64a0b | 11037 | |
3a5c3e22 | 11038 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 | 11039 | (int) (exp_end - exp_start), exp_start); |
06a64a0b TT |
11040 | } |
11041 | else | |
3a5c3e22 | 11042 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
11043 | |
11044 | if (use_mask) | |
11045 | { | |
3a5c3e22 | 11046 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
11047 | } |
11048 | else | |
11049 | { | |
3a5c3e22 | 11050 | w->val = val; |
bb9d5f81 PP |
11051 | w->val_bitpos = saved_bitpos; |
11052 | w->val_bitsize = saved_bitsize; | |
3a5c3e22 | 11053 | w->val_valid = 1; |
9c06b0b4 | 11054 | } |
77b06cd7 | 11055 | |
c906108c | 11056 | if (cond_start) |
c1fc2657 | 11057 | w->cond_string = savestring (cond_start, cond_end - cond_start); |
c906108c | 11058 | else |
c1fc2657 | 11059 | w->cond_string = 0; |
c5aa993b | 11060 | |
441d7c93 | 11061 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 11062 | { |
441d7c93 | 11063 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 11064 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 11065 | } |
c906108c | 11066 | else |
f6bc2008 | 11067 | { |
3a5c3e22 PA |
11068 | w->watchpoint_frame = null_frame_id; |
11069 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 11070 | } |
c906108c | 11071 | |
d983da9c | 11072 | if (scope_breakpoint != NULL) |
c906108c | 11073 | { |
d983da9c DJ |
11074 | /* The scope breakpoint is related to the watchpoint. We will |
11075 | need to act on them together. */ | |
c1fc2657 | 11076 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 11077 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 11078 | } |
d983da9c | 11079 | |
06a64a0b TT |
11080 | if (!just_location) |
11081 | value_free_to_mark (mark); | |
2d134ed3 | 11082 | |
b270e6f9 TT |
11083 | /* Finally update the new watchpoint. This creates the locations |
11084 | that should be inserted. */ | |
11085 | update_watchpoint (w.get (), 1); | |
a9634178 | 11086 | |
b270e6f9 | 11087 | install_breakpoint (internal, std::move (w), 1); |
bbc13ae3 | 11088 | do_cleanups (back_to); |
c906108c SS |
11089 | } |
11090 | ||
e09342b5 | 11091 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 11092 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 11093 | |
c906108c | 11094 | static int |
a9634178 | 11095 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
11096 | { |
11097 | int found_memory_cnt = 0; | |
2e70b7b9 | 11098 | struct value *head = v; |
c906108c SS |
11099 | |
11100 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 11101 | if (!can_use_hw_watchpoints) |
c906108c | 11102 | return 0; |
c5aa993b | 11103 | |
5c44784c JM |
11104 | /* Make sure that the value of the expression depends only upon |
11105 | memory contents, and values computed from them within GDB. If we | |
11106 | find any register references or function calls, we can't use a | |
11107 | hardware watchpoint. | |
11108 | ||
11109 | The idea here is that evaluating an expression generates a series | |
11110 | of values, one holding the value of every subexpression. (The | |
11111 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
11112 | a*b+c.) GDB's values hold almost enough information to establish | |
11113 | the criteria given above --- they identify memory lvalues, | |
11114 | register lvalues, computed values, etcetera. So we can evaluate | |
11115 | the expression, and then scan the chain of values that leaves | |
11116 | behind to decide whether we can detect any possible change to the | |
11117 | expression's final value using only hardware watchpoints. | |
11118 | ||
11119 | However, I don't think that the values returned by inferior | |
11120 | function calls are special in any way. So this function may not | |
11121 | notice that an expression involving an inferior function call | |
11122 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 11123 | for (; v; v = value_next (v)) |
c906108c | 11124 | { |
5c44784c | 11125 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 11126 | { |
8464be76 DJ |
11127 | if (v != head && value_lazy (v)) |
11128 | /* A lazy memory lvalue in the chain is one that GDB never | |
11129 | needed to fetch; we either just used its address (e.g., | |
11130 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
11131 | in `a,b'). This doesn't apply to HEAD; if that is | |
11132 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 11133 | ; |
53a5351d | 11134 | else |
5c44784c JM |
11135 | { |
11136 | /* Ahh, memory we actually used! Check if we can cover | |
11137 | it with hardware watchpoints. */ | |
df407dfe | 11138 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
11139 | |
11140 | /* We only watch structs and arrays if user asked for it | |
11141 | explicitly, never if they just happen to appear in a | |
11142 | middle of some value chain. */ | |
11143 | if (v == head | |
11144 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
11145 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
11146 | { | |
42ae5230 | 11147 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
11148 | int len; |
11149 | int num_regs; | |
11150 | ||
a9634178 | 11151 | len = (target_exact_watchpoints |
e09342b5 TJB |
11152 | && is_scalar_type_recursive (vtype))? |
11153 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 11154 | |
e09342b5 TJB |
11155 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
11156 | if (!num_regs) | |
2e70b7b9 MS |
11157 | return 0; |
11158 | else | |
e09342b5 | 11159 | found_memory_cnt += num_regs; |
2e70b7b9 | 11160 | } |
5c44784c | 11161 | } |
c5aa993b | 11162 | } |
5086187c AC |
11163 | else if (VALUE_LVAL (v) != not_lval |
11164 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 11165 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 11166 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 11167 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
11168 | } |
11169 | ||
11170 | /* The expression itself looks suitable for using a hardware | |
11171 | watchpoint, but give the target machine a chance to reject it. */ | |
11172 | return found_memory_cnt; | |
11173 | } | |
11174 | ||
8b93c638 | 11175 | void |
f2fc3015 | 11176 | watch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 11177 | { |
84f4c1fe | 11178 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
11179 | } |
11180 | ||
06a64a0b TT |
11181 | /* A helper function that looks for the "-location" argument and then |
11182 | calls watch_command_1. */ | |
11183 | ||
11184 | static void | |
11185 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
11186 | { | |
11187 | int just_location = 0; | |
11188 | ||
11189 | if (arg | |
11190 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
11191 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
11192 | { | |
e9cafbcc | 11193 | arg = skip_spaces (arg); |
06a64a0b TT |
11194 | just_location = 1; |
11195 | } | |
11196 | ||
84f4c1fe | 11197 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 11198 | } |
8926118c | 11199 | |
c5aa993b | 11200 | static void |
fba45db2 | 11201 | watch_command (char *arg, int from_tty) |
c906108c | 11202 | { |
06a64a0b | 11203 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
11204 | } |
11205 | ||
8b93c638 | 11206 | void |
f2fc3015 | 11207 | rwatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 11208 | { |
84f4c1fe | 11209 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 11210 | } |
8926118c | 11211 | |
c5aa993b | 11212 | static void |
fba45db2 | 11213 | rwatch_command (char *arg, int from_tty) |
c906108c | 11214 | { |
06a64a0b | 11215 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
11216 | } |
11217 | ||
8b93c638 | 11218 | void |
f2fc3015 | 11219 | awatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 11220 | { |
84f4c1fe | 11221 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 11222 | } |
8926118c | 11223 | |
c5aa993b | 11224 | static void |
fba45db2 | 11225 | awatch_command (char *arg, int from_tty) |
c906108c | 11226 | { |
06a64a0b | 11227 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 11228 | } |
c906108c | 11229 | \f |
c5aa993b | 11230 | |
cfc31633 PA |
11231 | /* Data for the FSM that manages the until(location)/advance commands |
11232 | in infcmd.c. Here because it uses the mechanisms of | |
11233 | breakpoints. */ | |
c906108c | 11234 | |
cfc31633 | 11235 | struct until_break_fsm |
bfec99b2 | 11236 | { |
cfc31633 PA |
11237 | /* The base class. */ |
11238 | struct thread_fsm thread_fsm; | |
11239 | ||
11240 | /* The thread that as current when the command was executed. */ | |
11241 | int thread; | |
11242 | ||
11243 | /* The breakpoint set at the destination location. */ | |
11244 | struct breakpoint *location_breakpoint; | |
11245 | ||
11246 | /* Breakpoint set at the return address in the caller frame. May be | |
11247 | NULL. */ | |
11248 | struct breakpoint *caller_breakpoint; | |
bfec99b2 PA |
11249 | }; |
11250 | ||
8980e177 PA |
11251 | static void until_break_fsm_clean_up (struct thread_fsm *self, |
11252 | struct thread_info *thread); | |
11253 | static int until_break_fsm_should_stop (struct thread_fsm *self, | |
11254 | struct thread_info *thread); | |
cfc31633 PA |
11255 | static enum async_reply_reason |
11256 | until_break_fsm_async_reply_reason (struct thread_fsm *self); | |
11257 | ||
11258 | /* until_break_fsm's vtable. */ | |
11259 | ||
11260 | static struct thread_fsm_ops until_break_fsm_ops = | |
11261 | { | |
11262 | NULL, /* dtor */ | |
11263 | until_break_fsm_clean_up, | |
11264 | until_break_fsm_should_stop, | |
11265 | NULL, /* return_value */ | |
11266 | until_break_fsm_async_reply_reason, | |
11267 | }; | |
11268 | ||
11269 | /* Allocate a new until_break_command_fsm. */ | |
11270 | ||
11271 | static struct until_break_fsm * | |
8980e177 | 11272 | new_until_break_fsm (struct interp *cmd_interp, int thread, |
cfc31633 PA |
11273 | struct breakpoint *location_breakpoint, |
11274 | struct breakpoint *caller_breakpoint) | |
11275 | { | |
11276 | struct until_break_fsm *sm; | |
11277 | ||
11278 | sm = XCNEW (struct until_break_fsm); | |
8980e177 | 11279 | thread_fsm_ctor (&sm->thread_fsm, &until_break_fsm_ops, cmd_interp); |
cfc31633 PA |
11280 | |
11281 | sm->thread = thread; | |
11282 | sm->location_breakpoint = location_breakpoint; | |
11283 | sm->caller_breakpoint = caller_breakpoint; | |
11284 | ||
11285 | return sm; | |
11286 | } | |
11287 | ||
11288 | /* Implementation of the 'should_stop' FSM method for the | |
11289 | until(location)/advance commands. */ | |
11290 | ||
11291 | static int | |
8980e177 PA |
11292 | until_break_fsm_should_stop (struct thread_fsm *self, |
11293 | struct thread_info *tp) | |
cfc31633 PA |
11294 | { |
11295 | struct until_break_fsm *sm = (struct until_break_fsm *) self; | |
cfc31633 PA |
11296 | |
11297 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11298 | sm->location_breakpoint) != NULL | |
11299 | || (sm->caller_breakpoint != NULL | |
11300 | && bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11301 | sm->caller_breakpoint) != NULL)) | |
11302 | thread_fsm_set_finished (self); | |
11303 | ||
11304 | return 1; | |
11305 | } | |
11306 | ||
11307 | /* Implementation of the 'clean_up' FSM method for the | |
11308 | until(location)/advance commands. */ | |
11309 | ||
c2c6d25f | 11310 | static void |
8980e177 PA |
11311 | until_break_fsm_clean_up (struct thread_fsm *self, |
11312 | struct thread_info *thread) | |
43ff13b4 | 11313 | { |
cfc31633 | 11314 | struct until_break_fsm *sm = (struct until_break_fsm *) self; |
bfec99b2 | 11315 | |
cfc31633 PA |
11316 | /* Clean up our temporary breakpoints. */ |
11317 | if (sm->location_breakpoint != NULL) | |
11318 | { | |
11319 | delete_breakpoint (sm->location_breakpoint); | |
11320 | sm->location_breakpoint = NULL; | |
11321 | } | |
11322 | if (sm->caller_breakpoint != NULL) | |
11323 | { | |
11324 | delete_breakpoint (sm->caller_breakpoint); | |
11325 | sm->caller_breakpoint = NULL; | |
11326 | } | |
11327 | delete_longjmp_breakpoint (sm->thread); | |
11328 | } | |
11329 | ||
11330 | /* Implementation of the 'async_reply_reason' FSM method for the | |
11331 | until(location)/advance commands. */ | |
11332 | ||
11333 | static enum async_reply_reason | |
11334 | until_break_fsm_async_reply_reason (struct thread_fsm *self) | |
11335 | { | |
11336 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
11337 | } |
11338 | ||
c906108c | 11339 | void |
f2fc3015 | 11340 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 11341 | { |
8556afb4 PA |
11342 | struct frame_info *frame; |
11343 | struct gdbarch *frame_gdbarch; | |
11344 | struct frame_id stack_frame_id; | |
11345 | struct frame_id caller_frame_id; | |
cfc31633 PA |
11346 | struct breakpoint *location_breakpoint; |
11347 | struct breakpoint *caller_breakpoint = NULL; | |
ffc2605c | 11348 | struct cleanup *old_chain; |
186c406b TT |
11349 | int thread; |
11350 | struct thread_info *tp; | |
cfc31633 | 11351 | struct until_break_fsm *sm; |
c906108c | 11352 | |
70509625 | 11353 | clear_proceed_status (0); |
c906108c SS |
11354 | |
11355 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11356 | this function. */ |
c5aa993b | 11357 | |
ffc2605c | 11358 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f | 11359 | |
6c5b2ebe PA |
11360 | std::vector<symtab_and_line> sals |
11361 | = (last_displayed_sal_is_valid () | |
11362 | ? decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
11363 | get_last_displayed_symtab (), | |
11364 | get_last_displayed_line ()) | |
11365 | : decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, | |
11366 | NULL, (struct symtab *) NULL, 0)); | |
c5aa993b | 11367 | |
6c5b2ebe | 11368 | if (sals.size () != 1) |
8a3fe4f8 | 11369 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11370 | |
6c5b2ebe | 11371 | symtab_and_line &sal = sals[0]; |
c5aa993b | 11372 | |
c906108c | 11373 | if (*arg) |
8a3fe4f8 | 11374 | error (_("Junk at end of arguments.")); |
c5aa993b | 11375 | |
c906108c | 11376 | resolve_sal_pc (&sal); |
c5aa993b | 11377 | |
186c406b | 11378 | tp = inferior_thread (); |
5d5658a1 | 11379 | thread = tp->global_num; |
186c406b | 11380 | |
883bc8d1 PA |
11381 | old_chain = make_cleanup (null_cleanup, NULL); |
11382 | ||
8556afb4 PA |
11383 | /* Note linespec handling above invalidates the frame chain. |
11384 | Installing a breakpoint also invalidates the frame chain (as it | |
11385 | may need to switch threads), so do any frame handling before | |
11386 | that. */ | |
11387 | ||
11388 | frame = get_selected_frame (NULL); | |
11389 | frame_gdbarch = get_frame_arch (frame); | |
11390 | stack_frame_id = get_stack_frame_id (frame); | |
11391 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11392 | |
ae66c1fc EZ |
11393 | /* Keep within the current frame, or in frames called by the current |
11394 | one. */ | |
edb3359d | 11395 | |
883bc8d1 | 11396 | if (frame_id_p (caller_frame_id)) |
c906108c | 11397 | { |
883bc8d1 | 11398 | struct symtab_and_line sal2; |
cfc31633 | 11399 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
11400 | |
11401 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11402 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 PA |
11403 | caller_gdbarch = frame_unwind_caller_arch (frame); |
11404 | caller_breakpoint = set_momentary_breakpoint (caller_gdbarch, | |
11405 | sal2, | |
11406 | caller_frame_id, | |
11407 | bp_until); | |
11408 | make_cleanup_delete_breakpoint (caller_breakpoint); | |
186c406b | 11409 | |
883bc8d1 | 11410 | set_longjmp_breakpoint (tp, caller_frame_id); |
186c406b | 11411 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
c906108c | 11412 | } |
c5aa993b | 11413 | |
c70a6932 JK |
11414 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11415 | frame = NULL; | |
11416 | ||
883bc8d1 PA |
11417 | if (anywhere) |
11418 | /* If the user told us to continue until a specified location, | |
11419 | we don't specify a frame at which we need to stop. */ | |
cfc31633 PA |
11420 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11421 | null_frame_id, bp_until); | |
883bc8d1 PA |
11422 | else |
11423 | /* Otherwise, specify the selected frame, because we want to stop | |
11424 | only at the very same frame. */ | |
cfc31633 PA |
11425 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11426 | stack_frame_id, bp_until); | |
11427 | make_cleanup_delete_breakpoint (location_breakpoint); | |
883bc8d1 | 11428 | |
8980e177 | 11429 | sm = new_until_break_fsm (command_interp (), tp->global_num, |
5d5658a1 | 11430 | location_breakpoint, caller_breakpoint); |
cfc31633 | 11431 | tp->thread_fsm = &sm->thread_fsm; |
f107f563 | 11432 | |
cfc31633 | 11433 | discard_cleanups (old_chain); |
f107f563 | 11434 | |
cfc31633 | 11435 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 11436 | } |
ae66c1fc | 11437 | |
c906108c SS |
11438 | /* This function attempts to parse an optional "if <cond>" clause |
11439 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11440 | |
c906108c SS |
11441 | Else, it returns a pointer to the condition string. (It does not |
11442 | attempt to evaluate the string against a particular block.) And, | |
11443 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11444 | if clause in the arg string. */ |
53a5351d | 11445 | |
63160a43 PA |
11446 | const char * |
11447 | ep_parse_optional_if_clause (const char **arg) | |
c906108c | 11448 | { |
63160a43 | 11449 | const char *cond_string; |
c5aa993b JM |
11450 | |
11451 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11452 | return NULL; |
c5aa993b | 11453 | |
4a64f543 | 11454 | /* Skip the "if" keyword. */ |
c906108c | 11455 | (*arg) += 2; |
c5aa993b | 11456 | |
c906108c | 11457 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11458 | condition string. */ |
f1735a53 | 11459 | *arg = skip_spaces (*arg); |
c906108c | 11460 | cond_string = *arg; |
c5aa993b | 11461 | |
4a64f543 MS |
11462 | /* Assume that the condition occupies the remainder of the arg |
11463 | string. */ | |
c906108c | 11464 | (*arg) += strlen (cond_string); |
c5aa993b | 11465 | |
c906108c SS |
11466 | return cond_string; |
11467 | } | |
c5aa993b | 11468 | |
c906108c SS |
11469 | /* Commands to deal with catching events, such as signals, exceptions, |
11470 | process start/exit, etc. */ | |
c5aa993b JM |
11471 | |
11472 | typedef enum | |
11473 | { | |
44feb3ce TT |
11474 | catch_fork_temporary, catch_vfork_temporary, |
11475 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11476 | } |
11477 | catch_fork_kind; | |
11478 | ||
c906108c | 11479 | static void |
63160a43 | 11480 | catch_fork_command_1 (char *arg_entry, int from_tty, |
cc59ec59 | 11481 | struct cmd_list_element *command) |
c906108c | 11482 | { |
63160a43 | 11483 | const char *arg = arg_entry; |
a6d9a66e | 11484 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11485 | const char *cond_string = NULL; |
44feb3ce TT |
11486 | catch_fork_kind fork_kind; |
11487 | int tempflag; | |
11488 | ||
11489 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11490 | tempflag = (fork_kind == catch_fork_temporary | |
11491 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11492 | |
44feb3ce TT |
11493 | if (!arg) |
11494 | arg = ""; | |
f1735a53 | 11495 | arg = skip_spaces (arg); |
c5aa993b | 11496 | |
c906108c | 11497 | /* The allowed syntax is: |
c5aa993b JM |
11498 | catch [v]fork |
11499 | catch [v]fork if <cond> | |
11500 | ||
4a64f543 | 11501 | First, check if there's an if clause. */ |
c906108c | 11502 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11503 | |
c906108c | 11504 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11505 | error (_("Junk at end of arguments.")); |
c5aa993b | 11506 | |
c906108c | 11507 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11508 | and enable reporting of such events. */ |
c5aa993b JM |
11509 | switch (fork_kind) |
11510 | { | |
44feb3ce TT |
11511 | case catch_fork_temporary: |
11512 | case catch_fork_permanent: | |
a6d9a66e | 11513 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11514 | &catch_fork_breakpoint_ops); |
c906108c | 11515 | break; |
44feb3ce TT |
11516 | case catch_vfork_temporary: |
11517 | case catch_vfork_permanent: | |
a6d9a66e | 11518 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11519 | &catch_vfork_breakpoint_ops); |
c906108c | 11520 | break; |
c5aa993b | 11521 | default: |
8a3fe4f8 | 11522 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11523 | break; |
c5aa993b | 11524 | } |
c906108c SS |
11525 | } |
11526 | ||
11527 | static void | |
63160a43 | 11528 | catch_exec_command_1 (char *arg_entry, int from_tty, |
cc59ec59 | 11529 | struct cmd_list_element *command) |
c906108c | 11530 | { |
63160a43 | 11531 | const char *arg = arg_entry; |
a6d9a66e | 11532 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11533 | int tempflag; |
63160a43 | 11534 | const char *cond_string = NULL; |
c906108c | 11535 | |
44feb3ce TT |
11536 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11537 | ||
11538 | if (!arg) | |
11539 | arg = ""; | |
f1735a53 | 11540 | arg = skip_spaces (arg); |
c906108c SS |
11541 | |
11542 | /* The allowed syntax is: | |
c5aa993b JM |
11543 | catch exec |
11544 | catch exec if <cond> | |
c906108c | 11545 | |
4a64f543 | 11546 | First, check if there's an if clause. */ |
c906108c SS |
11547 | cond_string = ep_parse_optional_if_clause (&arg); |
11548 | ||
11549 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11550 | error (_("Junk at end of arguments.")); |
c906108c | 11551 | |
b270e6f9 TT |
11552 | std::unique_ptr<exec_catchpoint> c (new exec_catchpoint ()); |
11553 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, | |
b4d90040 PA |
11554 | &catch_exec_breakpoint_ops); |
11555 | c->exec_pathname = NULL; | |
11556 | ||
b270e6f9 | 11557 | install_breakpoint (0, std::move (c), 1); |
c906108c | 11558 | } |
c5aa993b | 11559 | |
9ac4176b | 11560 | void |
28010a5d PA |
11561 | init_ada_exception_breakpoint (struct breakpoint *b, |
11562 | struct gdbarch *gdbarch, | |
11563 | struct symtab_and_line sal, | |
f2fc3015 | 11564 | const char *addr_string, |
c0a91b2b | 11565 | const struct breakpoint_ops *ops, |
28010a5d | 11566 | int tempflag, |
349774ef | 11567 | int enabled, |
28010a5d | 11568 | int from_tty) |
f7f9143b | 11569 | { |
f7f9143b JB |
11570 | if (from_tty) |
11571 | { | |
5af949e3 UW |
11572 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11573 | if (!loc_gdbarch) | |
11574 | loc_gdbarch = gdbarch; | |
11575 | ||
6c95b8df PA |
11576 | describe_other_breakpoints (loc_gdbarch, |
11577 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11578 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11579 | version for exception catchpoints, because two catchpoints | |
11580 | used for different exception names will use the same address. | |
11581 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11582 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11583 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11584 | the user what type of catchpoint it is. The above is good |
11585 | enough for now, though. */ | |
11586 | } | |
11587 | ||
28010a5d | 11588 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b | 11589 | |
349774ef | 11590 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11591 | b->disposition = tempflag ? disp_del : disp_donttouch; |
d28cd78a TT |
11592 | b->location = string_to_event_location (&addr_string, |
11593 | language_def (language_ada)); | |
f7f9143b | 11594 | b->language = language_ada; |
f7f9143b JB |
11595 | } |
11596 | ||
c906108c | 11597 | static void |
fba45db2 | 11598 | catch_command (char *arg, int from_tty) |
c906108c | 11599 | { |
44feb3ce | 11600 | error (_("Catch requires an event name.")); |
c906108c SS |
11601 | } |
11602 | \f | |
11603 | ||
11604 | static void | |
fba45db2 | 11605 | tcatch_command (char *arg, int from_tty) |
c906108c | 11606 | { |
44feb3ce | 11607 | error (_("Catch requires an event name.")); |
c906108c SS |
11608 | } |
11609 | ||
8a2c437b TT |
11610 | /* A qsort comparison function that sorts breakpoints in order. */ |
11611 | ||
11612 | static int | |
11613 | compare_breakpoints (const void *a, const void *b) | |
11614 | { | |
9a3c8263 | 11615 | const breakpoint_p *ba = (const breakpoint_p *) a; |
8a2c437b | 11616 | uintptr_t ua = (uintptr_t) *ba; |
9a3c8263 | 11617 | const breakpoint_p *bb = (const breakpoint_p *) b; |
8a2c437b TT |
11618 | uintptr_t ub = (uintptr_t) *bb; |
11619 | ||
11620 | if ((*ba)->number < (*bb)->number) | |
11621 | return -1; | |
11622 | else if ((*ba)->number > (*bb)->number) | |
11623 | return 1; | |
11624 | ||
11625 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11626 | the number 0. */ | |
11627 | if (ua < ub) | |
11628 | return -1; | |
94b0e70d | 11629 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11630 | } |
11631 | ||
80f8a6eb | 11632 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11633 | |
11634 | static void | |
fba45db2 | 11635 | clear_command (char *arg, int from_tty) |
c906108c | 11636 | { |
8a2c437b | 11637 | struct breakpoint *b, *prev; |
d6e956e5 VP |
11638 | VEC(breakpoint_p) *found = 0; |
11639 | int ix; | |
c906108c | 11640 | int default_match; |
c906108c | 11641 | int i; |
8a2c437b | 11642 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
c906108c | 11643 | |
6c5b2ebe PA |
11644 | std::vector<symtab_and_line> decoded_sals; |
11645 | symtab_and_line last_sal; | |
11646 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
11647 | if (arg) |
11648 | { | |
6c5b2ebe PA |
11649 | decoded_sals |
11650 | = decode_line_with_current_source (arg, | |
11651 | (DECODE_LINE_FUNFIRSTLINE | |
11652 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 11653 | default_match = 0; |
6c5b2ebe | 11654 | sals = decoded_sals; |
c906108c SS |
11655 | } |
11656 | else | |
11657 | { | |
1bfeeb0f JL |
11658 | /* Set sal's line, symtab, pc, and pspace to the values |
11659 | corresponding to the last call to print_frame_info. If the | |
11660 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 11661 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 11662 | if (last_sal.symtab == 0) |
8a3fe4f8 | 11663 | error (_("No source file specified.")); |
c906108c | 11664 | |
c906108c | 11665 | default_match = 1; |
6c5b2ebe | 11666 | sals = last_sal; |
c906108c SS |
11667 | } |
11668 | ||
4a64f543 MS |
11669 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11670 | seems, because all existing breakpoints typically have both | |
11671 | file/line and pc set. So, if clear is given file/line, we can | |
11672 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11673 | |
11674 | We only support clearing given the address explicitly | |
11675 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11676 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11677 | due to optimization, all in one block. |
4a64f543 MS |
11678 | |
11679 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11680 | PC corresponding to the same file:line, the breakpoint won't |
11681 | be cleared. We probably can still clear the breakpoint, but | |
11682 | since the other PC value is never presented to user, user | |
11683 | can only find it by guessing, and it does not seem important | |
11684 | to support that. */ | |
11685 | ||
4a64f543 MS |
11686 | /* For each line spec given, delete bps which correspond to it. Do |
11687 | it in two passes, solely to preserve the current behavior that | |
11688 | from_tty is forced true if we delete more than one | |
11689 | breakpoint. */ | |
c906108c | 11690 | |
80f8a6eb | 11691 | found = NULL; |
8a2c437b | 11692 | make_cleanup (VEC_cleanup (breakpoint_p), &found); |
6c5b2ebe | 11693 | for (const auto &sal : sals) |
c906108c | 11694 | { |
05cba821 JK |
11695 | const char *sal_fullname; |
11696 | ||
c906108c | 11697 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11698 | If line given (pc == 0), clear all bpts on specified line. |
11699 | If defaulting, clear all bpts on default line | |
c906108c | 11700 | or at default pc. |
c5aa993b JM |
11701 | |
11702 | defaulting sal.pc != 0 tests to do | |
11703 | ||
11704 | 0 1 pc | |
11705 | 1 1 pc _and_ line | |
11706 | 0 0 line | |
11707 | 1 0 <can't happen> */ | |
c906108c | 11708 | |
05cba821 JK |
11709 | sal_fullname = (sal.symtab == NULL |
11710 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11711 | |
4a64f543 | 11712 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11713 | ALL_BREAKPOINTS (b) |
c5aa993b | 11714 | { |
0d381245 | 11715 | int match = 0; |
4a64f543 | 11716 | /* Are we going to delete b? */ |
cc60f2e3 | 11717 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11718 | { |
11719 | struct bp_location *loc = b->loc; | |
11720 | for (; loc; loc = loc->next) | |
11721 | { | |
f8eba3c6 TT |
11722 | /* If the user specified file:line, don't allow a PC |
11723 | match. This matches historical gdb behavior. */ | |
11724 | int pc_match = (!sal.explicit_line | |
11725 | && sal.pc | |
11726 | && (loc->pspace == sal.pspace) | |
11727 | && (loc->address == sal.pc) | |
11728 | && (!section_is_overlay (loc->section) | |
11729 | || loc->section == sal.section)); | |
4aac40c8 TT |
11730 | int line_match = 0; |
11731 | ||
11732 | if ((default_match || sal.explicit_line) | |
2f202fde | 11733 | && loc->symtab != NULL |
05cba821 | 11734 | && sal_fullname != NULL |
4aac40c8 | 11735 | && sal.pspace == loc->pspace |
05cba821 JK |
11736 | && loc->line_number == sal.line |
11737 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11738 | sal_fullname) == 0) | |
11739 | line_match = 1; | |
4aac40c8 | 11740 | |
0d381245 VP |
11741 | if (pc_match || line_match) |
11742 | { | |
11743 | match = 1; | |
11744 | break; | |
11745 | } | |
11746 | } | |
11747 | } | |
11748 | ||
11749 | if (match) | |
d6e956e5 | 11750 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 11751 | } |
80f8a6eb | 11752 | } |
8a2c437b | 11753 | |
80f8a6eb | 11754 | /* Now go thru the 'found' chain and delete them. */ |
d6e956e5 | 11755 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
11756 | { |
11757 | if (arg) | |
8a3fe4f8 | 11758 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11759 | else |
8a3fe4f8 | 11760 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11761 | } |
c906108c | 11762 | |
8a2c437b TT |
11763 | /* Remove duplicates from the vec. */ |
11764 | qsort (VEC_address (breakpoint_p, found), | |
11765 | VEC_length (breakpoint_p, found), | |
11766 | sizeof (breakpoint_p), | |
11767 | compare_breakpoints); | |
11768 | prev = VEC_index (breakpoint_p, found, 0); | |
11769 | for (ix = 1; VEC_iterate (breakpoint_p, found, ix, b); ++ix) | |
11770 | { | |
11771 | if (b == prev) | |
11772 | { | |
11773 | VEC_ordered_remove (breakpoint_p, found, ix); | |
11774 | --ix; | |
11775 | } | |
11776 | } | |
11777 | ||
d6e956e5 | 11778 | if (VEC_length(breakpoint_p, found) > 1) |
4a64f543 | 11779 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11780 | if (from_tty) |
a3f17187 | 11781 | { |
d6e956e5 | 11782 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
11783 | printf_unfiltered (_("Deleted breakpoint ")); |
11784 | else | |
11785 | printf_unfiltered (_("Deleted breakpoints ")); | |
11786 | } | |
d6e956e5 VP |
11787 | |
11788 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 11789 | { |
c5aa993b | 11790 | if (from_tty) |
d6e956e5 VP |
11791 | printf_unfiltered ("%d ", b->number); |
11792 | delete_breakpoint (b); | |
c906108c | 11793 | } |
80f8a6eb MS |
11794 | if (from_tty) |
11795 | putchar_unfiltered ('\n'); | |
8a2c437b TT |
11796 | |
11797 | do_cleanups (cleanups); | |
c906108c SS |
11798 | } |
11799 | \f | |
11800 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11801 | all breakpoints that are marked for deletion, whether hit or not. | |
11802 | This is called after any breakpoint is hit, or after errors. */ | |
11803 | ||
11804 | void | |
fba45db2 | 11805 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11806 | { |
35df4500 | 11807 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11808 | |
11809 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11810 | if (bs->breakpoint_at |
11811 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11812 | && bs->stop) |
f431efe5 | 11813 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11814 | |
35df4500 | 11815 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11816 | { |
b5de0fa7 | 11817 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11818 | delete_breakpoint (b); |
11819 | } | |
c906108c SS |
11820 | } |
11821 | ||
4a64f543 MS |
11822 | /* A comparison function for bp_location AP and BP being interfaced to |
11823 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
11824 | does breakpoint_address_is_meaningful say for its OWNER), | |
1a853c52 | 11825 | secondarily by ordering first permanent elements and |
4a64f543 | 11826 | terciarily just ensuring the array is sorted stable way despite |
e5dd4106 | 11827 | qsort being an unstable algorithm. */ |
876fa593 JK |
11828 | |
11829 | static int | |
f5336ca5 | 11830 | bp_locations_compare (const void *ap, const void *bp) |
876fa593 | 11831 | { |
9a3c8263 SM |
11832 | const struct bp_location *a = *(const struct bp_location **) ap; |
11833 | const struct bp_location *b = *(const struct bp_location **) bp; | |
876fa593 JK |
11834 | |
11835 | if (a->address != b->address) | |
11836 | return (a->address > b->address) - (a->address < b->address); | |
11837 | ||
dea2aa5f LM |
11838 | /* Sort locations at the same address by their pspace number, keeping |
11839 | locations of the same inferior (in a multi-inferior environment) | |
11840 | grouped. */ | |
11841 | ||
11842 | if (a->pspace->num != b->pspace->num) | |
11843 | return ((a->pspace->num > b->pspace->num) | |
11844 | - (a->pspace->num < b->pspace->num)); | |
11845 | ||
876fa593 | 11846 | /* Sort permanent breakpoints first. */ |
1a853c52 PA |
11847 | if (a->permanent != b->permanent) |
11848 | return (a->permanent < b->permanent) - (a->permanent > b->permanent); | |
876fa593 | 11849 | |
c56a97f9 JK |
11850 | /* Make the internal GDB representation stable across GDB runs |
11851 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11852 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11853 | |
11854 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
11855 | return ((a->owner->number > b->owner->number) |
11856 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
11857 | |
11858 | return (a > b) - (a < b); | |
11859 | } | |
11860 | ||
f5336ca5 PA |
11861 | /* Set bp_locations_placed_address_before_address_max and |
11862 | bp_locations_shadow_len_after_address_max according to the current | |
11863 | content of the bp_locations array. */ | |
f7545552 TT |
11864 | |
11865 | static void | |
f5336ca5 | 11866 | bp_locations_target_extensions_update (void) |
f7545552 | 11867 | { |
876fa593 JK |
11868 | struct bp_location *bl, **blp_tmp; |
11869 | ||
f5336ca5 PA |
11870 | bp_locations_placed_address_before_address_max = 0; |
11871 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 JK |
11872 | |
11873 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
11874 | { | |
11875 | CORE_ADDR start, end, addr; | |
11876 | ||
11877 | if (!bp_location_has_shadow (bl)) | |
11878 | continue; | |
11879 | ||
11880 | start = bl->target_info.placed_address; | |
11881 | end = start + bl->target_info.shadow_len; | |
11882 | ||
11883 | gdb_assert (bl->address >= start); | |
11884 | addr = bl->address - start; | |
f5336ca5 PA |
11885 | if (addr > bp_locations_placed_address_before_address_max) |
11886 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
11887 | |
11888 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11889 | ||
11890 | gdb_assert (bl->address < end); | |
11891 | addr = end - bl->address; | |
f5336ca5 PA |
11892 | if (addr > bp_locations_shadow_len_after_address_max) |
11893 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 11894 | } |
f7545552 TT |
11895 | } |
11896 | ||
1e4d1764 YQ |
11897 | /* Download tracepoint locations if they haven't been. */ |
11898 | ||
11899 | static void | |
11900 | download_tracepoint_locations (void) | |
11901 | { | |
7ed2c994 | 11902 | struct breakpoint *b; |
dd2e65cc | 11903 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 11904 | |
5ed8105e | 11905 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 11906 | |
7ed2c994 | 11907 | ALL_TRACEPOINTS (b) |
1e4d1764 | 11908 | { |
7ed2c994 | 11909 | struct bp_location *bl; |
1e4d1764 | 11910 | struct tracepoint *t; |
f2a8bc8a | 11911 | int bp_location_downloaded = 0; |
1e4d1764 | 11912 | |
7ed2c994 | 11913 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
11914 | ? !may_insert_fast_tracepoints |
11915 | : !may_insert_tracepoints)) | |
11916 | continue; | |
11917 | ||
dd2e65cc YQ |
11918 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
11919 | { | |
11920 | if (target_can_download_tracepoint ()) | |
11921 | can_download_tracepoint = TRIBOOL_TRUE; | |
11922 | else | |
11923 | can_download_tracepoint = TRIBOOL_FALSE; | |
11924 | } | |
11925 | ||
11926 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
11927 | break; | |
11928 | ||
7ed2c994 YQ |
11929 | for (bl = b->loc; bl; bl = bl->next) |
11930 | { | |
11931 | /* In tracepoint, locations are _never_ duplicated, so | |
11932 | should_be_inserted is equivalent to | |
11933 | unduplicated_should_be_inserted. */ | |
11934 | if (!should_be_inserted (bl) || bl->inserted) | |
11935 | continue; | |
1e4d1764 | 11936 | |
7ed2c994 | 11937 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 11938 | |
7ed2c994 | 11939 | target_download_tracepoint (bl); |
1e4d1764 | 11940 | |
7ed2c994 | 11941 | bl->inserted = 1; |
f2a8bc8a | 11942 | bp_location_downloaded = 1; |
7ed2c994 YQ |
11943 | } |
11944 | t = (struct tracepoint *) b; | |
11945 | t->number_on_target = b->number; | |
f2a8bc8a YQ |
11946 | if (bp_location_downloaded) |
11947 | observer_notify_breakpoint_modified (b); | |
1e4d1764 | 11948 | } |
1e4d1764 YQ |
11949 | } |
11950 | ||
934709f0 PW |
11951 | /* Swap the insertion/duplication state between two locations. */ |
11952 | ||
11953 | static void | |
11954 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11955 | { | |
11956 | const int left_inserted = left->inserted; | |
11957 | const int left_duplicate = left->duplicate; | |
b775012e | 11958 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11959 | const struct bp_target_info left_target_info = left->target_info; |
11960 | ||
1e4d1764 YQ |
11961 | /* Locations of tracepoints can never be duplicated. */ |
11962 | if (is_tracepoint (left->owner)) | |
11963 | gdb_assert (!left->duplicate); | |
11964 | if (is_tracepoint (right->owner)) | |
11965 | gdb_assert (!right->duplicate); | |
11966 | ||
934709f0 PW |
11967 | left->inserted = right->inserted; |
11968 | left->duplicate = right->duplicate; | |
b775012e | 11969 | left->needs_update = right->needs_update; |
934709f0 PW |
11970 | left->target_info = right->target_info; |
11971 | right->inserted = left_inserted; | |
11972 | right->duplicate = left_duplicate; | |
b775012e | 11973 | right->needs_update = left_needs_update; |
934709f0 PW |
11974 | right->target_info = left_target_info; |
11975 | } | |
11976 | ||
b775012e LM |
11977 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11978 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11979 | conditions on the target's side. Such conditions need to be updated on | |
11980 | the target. */ | |
11981 | ||
11982 | static void | |
11983 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11984 | { | |
11985 | struct bp_location **locp = NULL, **loc2p; | |
11986 | struct bp_location *loc; | |
11987 | CORE_ADDR address = 0; | |
11988 | int pspace_num; | |
11989 | ||
11990 | address = bl->address; | |
11991 | pspace_num = bl->pspace->num; | |
11992 | ||
11993 | /* This is only meaningful if the target is | |
11994 | evaluating conditions and if the user has | |
11995 | opted for condition evaluation on the target's | |
11996 | side. */ | |
11997 | if (gdb_evaluates_breakpoint_condition_p () | |
11998 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11999 | return; | |
12000 | ||
12001 | /* Flag all breakpoint locations with this address and | |
12002 | the same program space as the location | |
12003 | as "its condition has changed". We need to | |
12004 | update the conditions on the target's side. */ | |
12005 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
12006 | { | |
12007 | loc = *loc2p; | |
12008 | ||
12009 | if (!is_breakpoint (loc->owner) | |
12010 | || pspace_num != loc->pspace->num) | |
12011 | continue; | |
12012 | ||
12013 | /* Flag the location appropriately. We use a different state to | |
12014 | let everyone know that we already updated the set of locations | |
12015 | with addr bl->address and program space bl->pspace. This is so | |
12016 | we don't have to keep calling these functions just to mark locations | |
12017 | that have already been marked. */ | |
12018 | loc->condition_changed = condition_updated; | |
12019 | ||
12020 | /* Free the agent expression bytecode as well. We will compute | |
12021 | it later on. */ | |
833177a4 | 12022 | loc->cond_bytecode.reset (); |
b775012e LM |
12023 | } |
12024 | } | |
44702360 PA |
12025 | /* Called whether new breakpoints are created, or existing breakpoints |
12026 | deleted, to update the global location list and recompute which | |
12027 | locations are duplicate of which. | |
b775012e | 12028 | |
04086b45 PA |
12029 | The INSERT_MODE flag determines whether locations may not, may, or |
12030 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
12031 | info. */ | |
b60e7edf | 12032 | |
0d381245 | 12033 | static void |
44702360 | 12034 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 12035 | { |
74960c60 | 12036 | struct breakpoint *b; |
876fa593 | 12037 | struct bp_location **locp, *loc; |
f7545552 | 12038 | struct cleanup *cleanups; |
b775012e LM |
12039 | /* Last breakpoint location address that was marked for update. */ |
12040 | CORE_ADDR last_addr = 0; | |
12041 | /* Last breakpoint location program space that was marked for update. */ | |
12042 | int last_pspace_num = -1; | |
f7545552 | 12043 | |
2d134ed3 PA |
12044 | /* Used in the duplicates detection below. When iterating over all |
12045 | bp_locations, points to the first bp_location of a given address. | |
12046 | Breakpoints and watchpoints of different types are never | |
12047 | duplicates of each other. Keep one pointer for each type of | |
12048 | breakpoint/watchpoint, so we only need to loop over all locations | |
12049 | once. */ | |
12050 | struct bp_location *bp_loc_first; /* breakpoint */ | |
12051 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
12052 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
12053 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 12054 | |
f5336ca5 PA |
12055 | /* Saved former bp_locations array which we compare against the newly |
12056 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
12057 | struct bp_location **old_locations, **old_locp; | |
12058 | unsigned old_locations_count; | |
876fa593 | 12059 | |
f5336ca5 PA |
12060 | old_locations = bp_locations; |
12061 | old_locations_count = bp_locations_count; | |
12062 | bp_locations = NULL; | |
12063 | bp_locations_count = 0; | |
12064 | cleanups = make_cleanup (xfree, old_locations); | |
0d381245 | 12065 | |
74960c60 | 12066 | ALL_BREAKPOINTS (b) |
876fa593 | 12067 | for (loc = b->loc; loc; loc = loc->next) |
f5336ca5 | 12068 | bp_locations_count++; |
876fa593 | 12069 | |
f5336ca5 PA |
12070 | bp_locations = XNEWVEC (struct bp_location *, bp_locations_count); |
12071 | locp = bp_locations; | |
876fa593 JK |
12072 | ALL_BREAKPOINTS (b) |
12073 | for (loc = b->loc; loc; loc = loc->next) | |
12074 | *locp++ = loc; | |
f5336ca5 PA |
12075 | qsort (bp_locations, bp_locations_count, sizeof (*bp_locations), |
12076 | bp_locations_compare); | |
876fa593 | 12077 | |
f5336ca5 | 12078 | bp_locations_target_extensions_update (); |
74960c60 | 12079 | |
4a64f543 MS |
12080 | /* Identify bp_location instances that are no longer present in the |
12081 | new list, and therefore should be freed. Note that it's not | |
12082 | necessary that those locations should be removed from inferior -- | |
12083 | if there's another location at the same address (previously | |
12084 | marked as duplicate), we don't need to remove/insert the | |
12085 | location. | |
876fa593 | 12086 | |
4a64f543 MS |
12087 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
12088 | and former bp_location array state respectively. */ | |
876fa593 | 12089 | |
f5336ca5 PA |
12090 | locp = bp_locations; |
12091 | for (old_locp = old_locations; | |
12092 | old_locp < old_locations + old_locations_count; | |
876fa593 | 12093 | old_locp++) |
74960c60 | 12094 | { |
876fa593 | 12095 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 12096 | struct bp_location **loc2p; |
876fa593 | 12097 | |
e5dd4106 | 12098 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 12099 | not, we have to free it. */ |
c7d46a38 | 12100 | int found_object = 0; |
20874c92 VP |
12101 | /* Tells if the location should remain inserted in the target. */ |
12102 | int keep_in_target = 0; | |
12103 | int removed = 0; | |
876fa593 | 12104 | |
4a64f543 MS |
12105 | /* Skip LOCP entries which will definitely never be needed. |
12106 | Stop either at or being the one matching OLD_LOC. */ | |
f5336ca5 | 12107 | while (locp < bp_locations + bp_locations_count |
c7d46a38 | 12108 | && (*locp)->address < old_loc->address) |
876fa593 | 12109 | locp++; |
c7d46a38 PA |
12110 | |
12111 | for (loc2p = locp; | |
f5336ca5 | 12112 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 PA |
12113 | && (*loc2p)->address == old_loc->address); |
12114 | loc2p++) | |
12115 | { | |
b775012e LM |
12116 | /* Check if this is a new/duplicated location or a duplicated |
12117 | location that had its condition modified. If so, we want to send | |
12118 | its condition to the target if evaluation of conditions is taking | |
12119 | place there. */ | |
12120 | if ((*loc2p)->condition_changed == condition_modified | |
12121 | && (last_addr != old_loc->address | |
12122 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 12123 | { |
b775012e LM |
12124 | force_breakpoint_reinsertion (*loc2p); |
12125 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 12126 | } |
b775012e LM |
12127 | |
12128 | if (*loc2p == old_loc) | |
12129 | found_object = 1; | |
c7d46a38 | 12130 | } |
74960c60 | 12131 | |
b775012e LM |
12132 | /* We have already handled this address, update it so that we don't |
12133 | have to go through updates again. */ | |
12134 | last_addr = old_loc->address; | |
12135 | ||
12136 | /* Target-side condition evaluation: Handle deleted locations. */ | |
12137 | if (!found_object) | |
12138 | force_breakpoint_reinsertion (old_loc); | |
12139 | ||
4a64f543 MS |
12140 | /* If this location is no longer present, and inserted, look if |
12141 | there's maybe a new location at the same address. If so, | |
12142 | mark that one inserted, and don't remove this one. This is | |
12143 | needed so that we don't have a time window where a breakpoint | |
12144 | at certain location is not inserted. */ | |
74960c60 | 12145 | |
876fa593 | 12146 | if (old_loc->inserted) |
0d381245 | 12147 | { |
4a64f543 MS |
12148 | /* If the location is inserted now, we might have to remove |
12149 | it. */ | |
74960c60 | 12150 | |
876fa593 | 12151 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 12152 | { |
4a64f543 MS |
12153 | /* The location is still present in the location list, |
12154 | and still should be inserted. Don't do anything. */ | |
20874c92 | 12155 | keep_in_target = 1; |
74960c60 VP |
12156 | } |
12157 | else | |
12158 | { | |
b775012e LM |
12159 | /* This location still exists, but it won't be kept in the |
12160 | target since it may have been disabled. We proceed to | |
12161 | remove its target-side condition. */ | |
12162 | ||
4a64f543 MS |
12163 | /* The location is either no longer present, or got |
12164 | disabled. See if there's another location at the | |
12165 | same address, in which case we don't need to remove | |
12166 | this one from the target. */ | |
876fa593 | 12167 | |
2bdf28a0 | 12168 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
12169 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
12170 | { | |
876fa593 | 12171 | for (loc2p = locp; |
f5336ca5 | 12172 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 | 12173 | && (*loc2p)->address == old_loc->address); |
876fa593 JK |
12174 | loc2p++) |
12175 | { | |
12176 | struct bp_location *loc2 = *loc2p; | |
12177 | ||
2d134ed3 | 12178 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 12179 | { |
85d721b8 PA |
12180 | /* Read watchpoint locations are switched to |
12181 | access watchpoints, if the former are not | |
12182 | supported, but the latter are. */ | |
12183 | if (is_hardware_watchpoint (old_loc->owner)) | |
12184 | { | |
12185 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
12186 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
12187 | } | |
12188 | ||
934709f0 PW |
12189 | /* loc2 is a duplicated location. We need to check |
12190 | if it should be inserted in case it will be | |
12191 | unduplicated. */ | |
12192 | if (loc2 != old_loc | |
12193 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 12194 | { |
934709f0 | 12195 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
12196 | keep_in_target = 1; |
12197 | break; | |
12198 | } | |
876fa593 JK |
12199 | } |
12200 | } | |
12201 | } | |
74960c60 VP |
12202 | } |
12203 | ||
20874c92 VP |
12204 | if (!keep_in_target) |
12205 | { | |
834c0d03 | 12206 | if (remove_breakpoint (old_loc)) |
20874c92 | 12207 | { |
4a64f543 MS |
12208 | /* This is just about all we can do. We could keep |
12209 | this location on the global list, and try to | |
12210 | remove it next time, but there's no particular | |
12211 | reason why we will succeed next time. | |
20874c92 | 12212 | |
4a64f543 MS |
12213 | Note that at this point, old_loc->owner is still |
12214 | valid, as delete_breakpoint frees the breakpoint | |
12215 | only after calling us. */ | |
3e43a32a MS |
12216 | printf_filtered (_("warning: Error removing " |
12217 | "breakpoint %d\n"), | |
876fa593 | 12218 | old_loc->owner->number); |
20874c92 VP |
12219 | } |
12220 | removed = 1; | |
12221 | } | |
0d381245 | 12222 | } |
74960c60 VP |
12223 | |
12224 | if (!found_object) | |
1c5cfe86 | 12225 | { |
fbea99ea | 12226 | if (removed && target_is_non_stop_p () |
1cf4d951 | 12227 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 12228 | { |
db82e815 PA |
12229 | /* This location was removed from the target. In |
12230 | non-stop mode, a race condition is possible where | |
12231 | we've removed a breakpoint, but stop events for that | |
12232 | breakpoint are already queued and will arrive later. | |
12233 | We apply an heuristic to be able to distinguish such | |
12234 | SIGTRAPs from other random SIGTRAPs: we keep this | |
12235 | breakpoint location for a bit, and will retire it | |
12236 | after we see some number of events. The theory here | |
12237 | is that reporting of events should, "on the average", | |
12238 | be fair, so after a while we'll see events from all | |
12239 | threads that have anything of interest, and no longer | |
12240 | need to keep this breakpoint location around. We | |
12241 | don't hold locations forever so to reduce chances of | |
12242 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
12243 | SIGTRAP. | |
12244 | ||
12245 | The heuristic failing can be disastrous on | |
12246 | decr_pc_after_break targets. | |
12247 | ||
12248 | On decr_pc_after_break targets, like e.g., x86-linux, | |
12249 | if we fail to recognize a late breakpoint SIGTRAP, | |
12250 | because events_till_retirement has reached 0 too | |
12251 | soon, we'll fail to do the PC adjustment, and report | |
12252 | a random SIGTRAP to the user. When the user resumes | |
12253 | the inferior, it will most likely immediately crash | |
2dec564e | 12254 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
12255 | corrupted, because of being resumed e.g., in the |
12256 | middle of a multi-byte instruction, or skipped a | |
12257 | one-byte instruction. This was actually seen happen | |
12258 | on native x86-linux, and should be less rare on | |
12259 | targets that do not support new thread events, like | |
12260 | remote, due to the heuristic depending on | |
12261 | thread_count. | |
12262 | ||
12263 | Mistaking a random SIGTRAP for a breakpoint trap | |
12264 | causes similar symptoms (PC adjustment applied when | |
12265 | it shouldn't), but then again, playing with SIGTRAPs | |
12266 | behind the debugger's back is asking for trouble. | |
12267 | ||
12268 | Since hardware watchpoint traps are always | |
12269 | distinguishable from other traps, so we don't need to | |
12270 | apply keep hardware watchpoint moribund locations | |
12271 | around. We simply always ignore hardware watchpoint | |
12272 | traps we can no longer explain. */ | |
12273 | ||
876fa593 JK |
12274 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
12275 | old_loc->owner = NULL; | |
20874c92 | 12276 | |
876fa593 | 12277 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
12278 | } |
12279 | else | |
f431efe5 PA |
12280 | { |
12281 | old_loc->owner = NULL; | |
12282 | decref_bp_location (&old_loc); | |
12283 | } | |
20874c92 | 12284 | } |
74960c60 | 12285 | } |
1c5cfe86 | 12286 | |
348d480f PA |
12287 | /* Rescan breakpoints at the same address and section, marking the |
12288 | first one as "first" and any others as "duplicates". This is so | |
12289 | that the bpt instruction is only inserted once. If we have a | |
12290 | permanent breakpoint at the same place as BPT, make that one the | |
12291 | official one, and the rest as duplicates. Permanent breakpoints | |
12292 | are sorted first for the same address. | |
12293 | ||
12294 | Do the same for hardware watchpoints, but also considering the | |
12295 | watchpoint's type (regular/access/read) and length. */ | |
12296 | ||
12297 | bp_loc_first = NULL; | |
12298 | wp_loc_first = NULL; | |
12299 | awp_loc_first = NULL; | |
12300 | rwp_loc_first = NULL; | |
12301 | ALL_BP_LOCATIONS (loc, locp) | |
12302 | { | |
12303 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12304 | non-NULL. */ | |
348d480f | 12305 | struct bp_location **loc_first_p; |
d3fbdd86 | 12306 | b = loc->owner; |
348d480f | 12307 | |
6f380991 | 12308 | if (!unduplicated_should_be_inserted (loc) |
348d480f | 12309 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
12310 | /* Don't detect duplicate for tracepoint locations because they are |
12311 | never duplicated. See the comments in field `duplicate' of | |
12312 | `struct bp_location'. */ | |
348d480f | 12313 | || is_tracepoint (b)) |
b775012e LM |
12314 | { |
12315 | /* Clear the condition modification flag. */ | |
12316 | loc->condition_changed = condition_unchanged; | |
12317 | continue; | |
12318 | } | |
348d480f | 12319 | |
348d480f PA |
12320 | if (b->type == bp_hardware_watchpoint) |
12321 | loc_first_p = &wp_loc_first; | |
12322 | else if (b->type == bp_read_watchpoint) | |
12323 | loc_first_p = &rwp_loc_first; | |
12324 | else if (b->type == bp_access_watchpoint) | |
12325 | loc_first_p = &awp_loc_first; | |
12326 | else | |
12327 | loc_first_p = &bp_loc_first; | |
12328 | ||
12329 | if (*loc_first_p == NULL | |
12330 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12331 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12332 | { | |
12333 | *loc_first_p = loc; | |
12334 | loc->duplicate = 0; | |
b775012e LM |
12335 | |
12336 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12337 | { | |
12338 | loc->needs_update = 1; | |
12339 | /* Clear the condition modification flag. */ | |
12340 | loc->condition_changed = condition_unchanged; | |
12341 | } | |
348d480f PA |
12342 | continue; |
12343 | } | |
12344 | ||
934709f0 PW |
12345 | |
12346 | /* This and the above ensure the invariant that the first location | |
12347 | is not duplicated, and is the inserted one. | |
12348 | All following are marked as duplicated, and are not inserted. */ | |
12349 | if (loc->inserted) | |
12350 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12351 | loc->duplicate = 1; |
12352 | ||
b775012e LM |
12353 | /* Clear the condition modification flag. */ |
12354 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
12355 | } |
12356 | ||
a25a5a45 | 12357 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 12358 | { |
04086b45 | 12359 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
12360 | insert_breakpoint_locations (); |
12361 | else | |
12362 | { | |
44702360 PA |
12363 | /* Even though the caller told us to not insert new |
12364 | locations, we may still need to update conditions on the | |
12365 | target's side of breakpoints that were already inserted | |
12366 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
12367 | only update conditions for locations that are marked |
12368 | "needs_update". */ | |
12369 | update_inserted_breakpoint_locations (); | |
12370 | } | |
12371 | } | |
348d480f | 12372 | |
04086b45 | 12373 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 YQ |
12374 | download_tracepoint_locations (); |
12375 | ||
348d480f PA |
12376 | do_cleanups (cleanups); |
12377 | } | |
12378 | ||
12379 | void | |
12380 | breakpoint_retire_moribund (void) | |
12381 | { | |
12382 | struct bp_location *loc; | |
12383 | int ix; | |
12384 | ||
12385 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
12386 | if (--(loc->events_till_retirement) == 0) | |
12387 | { | |
12388 | decref_bp_location (&loc); | |
12389 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
12390 | --ix; | |
12391 | } | |
12392 | } | |
12393 | ||
12394 | static void | |
44702360 | 12395 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 12396 | { |
348d480f | 12397 | |
492d29ea PA |
12398 | TRY |
12399 | { | |
12400 | update_global_location_list (insert_mode); | |
12401 | } | |
12402 | CATCH (e, RETURN_MASK_ERROR) | |
12403 | { | |
12404 | } | |
12405 | END_CATCH | |
348d480f PA |
12406 | } |
12407 | ||
12408 | /* Clear BKP from a BPS. */ | |
12409 | ||
12410 | static void | |
12411 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12412 | { | |
12413 | bpstat bs; | |
12414 | ||
12415 | for (bs = bps; bs; bs = bs->next) | |
12416 | if (bs->breakpoint_at == bpt) | |
12417 | { | |
12418 | bs->breakpoint_at = NULL; | |
12419 | bs->old_val = NULL; | |
12420 | /* bs->commands will be freed later. */ | |
12421 | } | |
12422 | } | |
12423 | ||
12424 | /* Callback for iterate_over_threads. */ | |
12425 | static int | |
12426 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12427 | { | |
9a3c8263 | 12428 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
12429 | |
12430 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12431 | return 0; | |
12432 | } | |
12433 | ||
12434 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12435 | callbacks. */ | |
12436 | ||
12437 | static void | |
12438 | say_where (struct breakpoint *b) | |
12439 | { | |
12440 | struct value_print_options opts; | |
12441 | ||
12442 | get_user_print_options (&opts); | |
12443 | ||
12444 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12445 | single string. */ | |
12446 | if (b->loc == NULL) | |
12447 | { | |
f00aae0f KS |
12448 | /* For pending locations, the output differs slightly based |
12449 | on b->extra_string. If this is non-NULL, it contains either | |
12450 | a condition or dprintf arguments. */ | |
12451 | if (b->extra_string == NULL) | |
12452 | { | |
12453 | printf_filtered (_(" (%s) pending."), | |
d28cd78a | 12454 | event_location_to_string (b->location.get ())); |
f00aae0f KS |
12455 | } |
12456 | else if (b->type == bp_dprintf) | |
12457 | { | |
12458 | printf_filtered (_(" (%s,%s) pending."), | |
d28cd78a | 12459 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12460 | b->extra_string); |
12461 | } | |
12462 | else | |
12463 | { | |
12464 | printf_filtered (_(" (%s %s) pending."), | |
d28cd78a | 12465 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12466 | b->extra_string); |
12467 | } | |
348d480f PA |
12468 | } |
12469 | else | |
12470 | { | |
2f202fde | 12471 | if (opts.addressprint || b->loc->symtab == NULL) |
348d480f PA |
12472 | { |
12473 | printf_filtered (" at "); | |
12474 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
12475 | gdb_stdout); | |
12476 | } | |
2f202fde | 12477 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12478 | { |
12479 | /* If there is a single location, we can print the location | |
12480 | more nicely. */ | |
12481 | if (b->loc->next == NULL) | |
12482 | printf_filtered (": file %s, line %d.", | |
05cba821 JK |
12483 | symtab_to_filename_for_display (b->loc->symtab), |
12484 | b->loc->line_number); | |
f8eba3c6 TT |
12485 | else |
12486 | /* This is not ideal, but each location may have a | |
12487 | different file name, and this at least reflects the | |
12488 | real situation somewhat. */ | |
f00aae0f | 12489 | printf_filtered (": %s.", |
d28cd78a | 12490 | event_location_to_string (b->location.get ())); |
f8eba3c6 | 12491 | } |
348d480f PA |
12492 | |
12493 | if (b->loc->next) | |
12494 | { | |
12495 | struct bp_location *loc = b->loc; | |
12496 | int n = 0; | |
12497 | for (; loc; loc = loc->next) | |
12498 | ++n; | |
12499 | printf_filtered (" (%d locations)", n); | |
12500 | } | |
12501 | } | |
12502 | } | |
12503 | ||
348d480f PA |
12504 | /* Default bp_location_ops methods. */ |
12505 | ||
12506 | static void | |
12507 | bp_location_dtor (struct bp_location *self) | |
12508 | { | |
348d480f PA |
12509 | xfree (self->function_name); |
12510 | } | |
12511 | ||
12512 | static const struct bp_location_ops bp_location_ops = | |
12513 | { | |
12514 | bp_location_dtor | |
12515 | }; | |
12516 | ||
c1fc2657 | 12517 | /* Destructor for the breakpoint base class. */ |
348d480f | 12518 | |
c1fc2657 | 12519 | breakpoint::~breakpoint () |
348d480f | 12520 | { |
c1fc2657 SM |
12521 | xfree (this->cond_string); |
12522 | xfree (this->extra_string); | |
12523 | xfree (this->filter); | |
348d480f PA |
12524 | } |
12525 | ||
2060206e PA |
12526 | static struct bp_location * |
12527 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f | 12528 | { |
5625a286 | 12529 | return new bp_location (&bp_location_ops, self); |
348d480f PA |
12530 | } |
12531 | ||
2060206e PA |
12532 | static void |
12533 | base_breakpoint_re_set (struct breakpoint *b) | |
12534 | { | |
12535 | /* Nothing to re-set. */ | |
12536 | } | |
12537 | ||
12538 | #define internal_error_pure_virtual_called() \ | |
12539 | gdb_assert_not_reached ("pure virtual function called") | |
12540 | ||
12541 | static int | |
12542 | base_breakpoint_insert_location (struct bp_location *bl) | |
12543 | { | |
12544 | internal_error_pure_virtual_called (); | |
12545 | } | |
12546 | ||
12547 | static int | |
73971819 PA |
12548 | base_breakpoint_remove_location (struct bp_location *bl, |
12549 | enum remove_bp_reason reason) | |
2060206e PA |
12550 | { |
12551 | internal_error_pure_virtual_called (); | |
12552 | } | |
12553 | ||
12554 | static int | |
12555 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
12556 | struct address_space *aspace, | |
09ac7c10 TT |
12557 | CORE_ADDR bp_addr, |
12558 | const struct target_waitstatus *ws) | |
2060206e PA |
12559 | { |
12560 | internal_error_pure_virtual_called (); | |
12561 | } | |
12562 | ||
12563 | static void | |
12564 | base_breakpoint_check_status (bpstat bs) | |
12565 | { | |
12566 | /* Always stop. */ | |
12567 | } | |
12568 | ||
12569 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12570 | errors. */ | |
12571 | ||
12572 | static int | |
12573 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12574 | { | |
12575 | internal_error_pure_virtual_called (); | |
12576 | } | |
12577 | ||
12578 | /* A "resources_needed" breakpoint_ops method that just internal | |
12579 | errors. */ | |
12580 | ||
12581 | static int | |
12582 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12583 | { | |
12584 | internal_error_pure_virtual_called (); | |
12585 | } | |
12586 | ||
12587 | static enum print_stop_action | |
12588 | base_breakpoint_print_it (bpstat bs) | |
12589 | { | |
12590 | internal_error_pure_virtual_called (); | |
12591 | } | |
12592 | ||
12593 | static void | |
12594 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12595 | struct ui_out *uiout) | |
12596 | { | |
12597 | /* nothing */ | |
12598 | } | |
12599 | ||
12600 | static void | |
12601 | base_breakpoint_print_mention (struct breakpoint *b) | |
12602 | { | |
12603 | internal_error_pure_virtual_called (); | |
12604 | } | |
12605 | ||
12606 | static void | |
12607 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12608 | { | |
12609 | internal_error_pure_virtual_called (); | |
12610 | } | |
12611 | ||
983af33b | 12612 | static void |
f00aae0f KS |
12613 | base_breakpoint_create_sals_from_location |
12614 | (const struct event_location *location, | |
12615 | struct linespec_result *canonical, | |
12616 | enum bptype type_wanted) | |
983af33b SDJ |
12617 | { |
12618 | internal_error_pure_virtual_called (); | |
12619 | } | |
12620 | ||
12621 | static void | |
12622 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12623 | struct linespec_result *c, | |
e1e01040 PA |
12624 | gdb::unique_xmalloc_ptr<char> cond_string, |
12625 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12626 | enum bptype type_wanted, |
12627 | enum bpdisp disposition, | |
12628 | int thread, | |
12629 | int task, int ignore_count, | |
12630 | const struct breakpoint_ops *o, | |
12631 | int from_tty, int enabled, | |
44f238bb | 12632 | int internal, unsigned flags) |
983af33b SDJ |
12633 | { |
12634 | internal_error_pure_virtual_called (); | |
12635 | } | |
12636 | ||
6c5b2ebe | 12637 | static std::vector<symtab_and_line> |
f00aae0f KS |
12638 | base_breakpoint_decode_location (struct breakpoint *b, |
12639 | const struct event_location *location, | |
6c5b2ebe | 12640 | struct program_space *search_pspace) |
983af33b SDJ |
12641 | { |
12642 | internal_error_pure_virtual_called (); | |
12643 | } | |
12644 | ||
ab04a2af TT |
12645 | /* The default 'explains_signal' method. */ |
12646 | ||
47591c29 | 12647 | static int |
427cd150 | 12648 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 12649 | { |
47591c29 | 12650 | return 1; |
ab04a2af TT |
12651 | } |
12652 | ||
9d6e6e84 HZ |
12653 | /* The default "after_condition_true" method. */ |
12654 | ||
12655 | static void | |
12656 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
12657 | { | |
12658 | /* Nothing to do. */ | |
12659 | } | |
12660 | ||
ab04a2af | 12661 | struct breakpoint_ops base_breakpoint_ops = |
2060206e | 12662 | { |
2060206e PA |
12663 | base_breakpoint_allocate_location, |
12664 | base_breakpoint_re_set, | |
12665 | base_breakpoint_insert_location, | |
12666 | base_breakpoint_remove_location, | |
12667 | base_breakpoint_breakpoint_hit, | |
12668 | base_breakpoint_check_status, | |
12669 | base_breakpoint_resources_needed, | |
12670 | base_breakpoint_works_in_software_mode, | |
12671 | base_breakpoint_print_it, | |
12672 | NULL, | |
12673 | base_breakpoint_print_one_detail, | |
12674 | base_breakpoint_print_mention, | |
983af33b | 12675 | base_breakpoint_print_recreate, |
5f700d83 | 12676 | base_breakpoint_create_sals_from_location, |
983af33b | 12677 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 12678 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
12679 | base_breakpoint_explains_signal, |
12680 | base_breakpoint_after_condition_true, | |
2060206e PA |
12681 | }; |
12682 | ||
12683 | /* Default breakpoint_ops methods. */ | |
12684 | ||
12685 | static void | |
348d480f PA |
12686 | bkpt_re_set (struct breakpoint *b) |
12687 | { | |
06edf0c0 | 12688 | /* FIXME: is this still reachable? */ |
9ef9e6a6 | 12689 | if (breakpoint_event_location_empty_p (b)) |
06edf0c0 | 12690 | { |
f00aae0f | 12691 | /* Anything without a location can't be re-set. */ |
348d480f | 12692 | delete_breakpoint (b); |
06edf0c0 | 12693 | return; |
348d480f | 12694 | } |
06edf0c0 PA |
12695 | |
12696 | breakpoint_re_set_default (b); | |
348d480f PA |
12697 | } |
12698 | ||
2060206e | 12699 | static int |
348d480f PA |
12700 | bkpt_insert_location (struct bp_location *bl) |
12701 | { | |
cd6c3b4f YQ |
12702 | CORE_ADDR addr = bl->target_info.reqstd_address; |
12703 | ||
579c6ad9 | 12704 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
12705 | bl->target_info.placed_address = addr; |
12706 | ||
348d480f | 12707 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
7c16b83e | 12708 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 12709 | else |
7c16b83e | 12710 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12711 | } |
12712 | ||
2060206e | 12713 | static int |
73971819 | 12714 | bkpt_remove_location (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f PA |
12715 | { |
12716 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12717 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12718 | else | |
73971819 | 12719 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
12720 | } |
12721 | ||
2060206e | 12722 | static int |
348d480f | 12723 | bkpt_breakpoint_hit (const struct bp_location *bl, |
09ac7c10 TT |
12724 | struct address_space *aspace, CORE_ADDR bp_addr, |
12725 | const struct target_waitstatus *ws) | |
348d480f | 12726 | { |
09ac7c10 | 12727 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12728 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12729 | return 0; |
12730 | ||
348d480f PA |
12731 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12732 | aspace, bp_addr)) | |
12733 | return 0; | |
12734 | ||
12735 | if (overlay_debugging /* unmapped overlay section */ | |
12736 | && section_is_overlay (bl->section) | |
12737 | && !section_is_mapped (bl->section)) | |
12738 | return 0; | |
12739 | ||
12740 | return 1; | |
12741 | } | |
12742 | ||
cd1608cc PA |
12743 | static int |
12744 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
12745 | struct address_space *aspace, CORE_ADDR bp_addr, | |
12746 | const struct target_waitstatus *ws) | |
12747 | { | |
12748 | if (dprintf_style == dprintf_style_agent | |
12749 | && target_can_run_breakpoint_commands ()) | |
12750 | { | |
12751 | /* An agent-style dprintf never causes a stop. If we see a trap | |
12752 | for this address it must be for a breakpoint that happens to | |
12753 | be set at the same address. */ | |
12754 | return 0; | |
12755 | } | |
12756 | ||
12757 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
12758 | } | |
12759 | ||
2060206e | 12760 | static int |
348d480f PA |
12761 | bkpt_resources_needed (const struct bp_location *bl) |
12762 | { | |
12763 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12764 | ||
12765 | return 1; | |
12766 | } | |
12767 | ||
2060206e | 12768 | static enum print_stop_action |
348d480f PA |
12769 | bkpt_print_it (bpstat bs) |
12770 | { | |
348d480f PA |
12771 | struct breakpoint *b; |
12772 | const struct bp_location *bl; | |
001c8c33 | 12773 | int bp_temp; |
79a45e25 | 12774 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12775 | |
12776 | gdb_assert (bs->bp_location_at != NULL); | |
12777 | ||
12778 | bl = bs->bp_location_at; | |
12779 | b = bs->breakpoint_at; | |
12780 | ||
001c8c33 PA |
12781 | bp_temp = b->disposition == disp_del; |
12782 | if (bl->address != bl->requested_address) | |
12783 | breakpoint_adjustment_warning (bl->requested_address, | |
12784 | bl->address, | |
12785 | b->number, 1); | |
12786 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
12787 | maybe_print_thread_hit_breakpoint (uiout); |
12788 | ||
001c8c33 | 12789 | if (bp_temp) |
112e8700 | 12790 | uiout->text ("Temporary breakpoint "); |
001c8c33 | 12791 | else |
112e8700 SM |
12792 | uiout->text ("Breakpoint "); |
12793 | if (uiout->is_mi_like_p ()) | |
348d480f | 12794 | { |
112e8700 | 12795 | uiout->field_string ("reason", |
001c8c33 | 12796 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 12797 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
06edf0c0 | 12798 | } |
112e8700 SM |
12799 | uiout->field_int ("bkptno", b->number); |
12800 | uiout->text (", "); | |
06edf0c0 | 12801 | |
001c8c33 | 12802 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12803 | } |
12804 | ||
2060206e | 12805 | static void |
06edf0c0 PA |
12806 | bkpt_print_mention (struct breakpoint *b) |
12807 | { | |
112e8700 | 12808 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
12809 | return; |
12810 | ||
12811 | switch (b->type) | |
12812 | { | |
12813 | case bp_breakpoint: | |
12814 | case bp_gnu_ifunc_resolver: | |
12815 | if (b->disposition == disp_del) | |
12816 | printf_filtered (_("Temporary breakpoint")); | |
12817 | else | |
12818 | printf_filtered (_("Breakpoint")); | |
12819 | printf_filtered (_(" %d"), b->number); | |
12820 | if (b->type == bp_gnu_ifunc_resolver) | |
12821 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12822 | break; | |
12823 | case bp_hardware_breakpoint: | |
12824 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12825 | break; | |
e7e0cddf SS |
12826 | case bp_dprintf: |
12827 | printf_filtered (_("Dprintf %d"), b->number); | |
12828 | break; | |
06edf0c0 PA |
12829 | } |
12830 | ||
12831 | say_where (b); | |
12832 | } | |
12833 | ||
2060206e | 12834 | static void |
06edf0c0 PA |
12835 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12836 | { | |
12837 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12838 | fprintf_unfiltered (fp, "tbreak"); | |
12839 | else if (tp->type == bp_breakpoint) | |
12840 | fprintf_unfiltered (fp, "break"); | |
12841 | else if (tp->type == bp_hardware_breakpoint | |
12842 | && tp->disposition == disp_del) | |
12843 | fprintf_unfiltered (fp, "thbreak"); | |
12844 | else if (tp->type == bp_hardware_breakpoint) | |
12845 | fprintf_unfiltered (fp, "hbreak"); | |
12846 | else | |
12847 | internal_error (__FILE__, __LINE__, | |
12848 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12849 | ||
f00aae0f | 12850 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12851 | event_location_to_string (tp->location.get ())); |
f00aae0f KS |
12852 | |
12853 | /* Print out extra_string if this breakpoint is pending. It might | |
12854 | contain, for example, conditions that were set by the user. */ | |
12855 | if (tp->loc == NULL && tp->extra_string != NULL) | |
12856 | fprintf_unfiltered (fp, " %s", tp->extra_string); | |
12857 | ||
dd11a36c | 12858 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12859 | } |
12860 | ||
983af33b | 12861 | static void |
f00aae0f KS |
12862 | bkpt_create_sals_from_location (const struct event_location *location, |
12863 | struct linespec_result *canonical, | |
12864 | enum bptype type_wanted) | |
983af33b | 12865 | { |
f00aae0f | 12866 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12867 | } |
12868 | ||
12869 | static void | |
12870 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12871 | struct linespec_result *canonical, | |
e1e01040 PA |
12872 | gdb::unique_xmalloc_ptr<char> cond_string, |
12873 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12874 | enum bptype type_wanted, |
12875 | enum bpdisp disposition, | |
12876 | int thread, | |
12877 | int task, int ignore_count, | |
12878 | const struct breakpoint_ops *ops, | |
12879 | int from_tty, int enabled, | |
44f238bb | 12880 | int internal, unsigned flags) |
983af33b | 12881 | { |
023fa29b | 12882 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12883 | std::move (cond_string), |
12884 | std::move (extra_string), | |
e7e0cddf | 12885 | type_wanted, |
983af33b SDJ |
12886 | disposition, thread, task, |
12887 | ignore_count, ops, from_tty, | |
44f238bb | 12888 | enabled, internal, flags); |
983af33b SDJ |
12889 | } |
12890 | ||
6c5b2ebe | 12891 | static std::vector<symtab_and_line> |
f00aae0f KS |
12892 | bkpt_decode_location (struct breakpoint *b, |
12893 | const struct event_location *location, | |
6c5b2ebe | 12894 | struct program_space *search_pspace) |
983af33b | 12895 | { |
6c5b2ebe | 12896 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12897 | } |
12898 | ||
06edf0c0 PA |
12899 | /* Virtual table for internal breakpoints. */ |
12900 | ||
12901 | static void | |
12902 | internal_bkpt_re_set (struct breakpoint *b) | |
12903 | { | |
12904 | switch (b->type) | |
12905 | { | |
12906 | /* Delete overlay event and longjmp master breakpoints; they | |
12907 | will be reset later by breakpoint_re_set. */ | |
12908 | case bp_overlay_event: | |
12909 | case bp_longjmp_master: | |
12910 | case bp_std_terminate_master: | |
12911 | case bp_exception_master: | |
12912 | delete_breakpoint (b); | |
12913 | break; | |
12914 | ||
12915 | /* This breakpoint is special, it's set up when the inferior | |
12916 | starts and we really don't want to touch it. */ | |
12917 | case bp_shlib_event: | |
12918 | ||
12919 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12920 | it is set up, we do not want to touch it. */ | |
12921 | case bp_thread_event: | |
12922 | break; | |
12923 | } | |
12924 | } | |
12925 | ||
12926 | static void | |
12927 | internal_bkpt_check_status (bpstat bs) | |
12928 | { | |
a9b3a50f PA |
12929 | if (bs->breakpoint_at->type == bp_shlib_event) |
12930 | { | |
12931 | /* If requested, stop when the dynamic linker notifies GDB of | |
12932 | events. This allows the user to get control and place | |
12933 | breakpoints in initializer routines for dynamically loaded | |
12934 | objects (among other things). */ | |
12935 | bs->stop = stop_on_solib_events; | |
12936 | bs->print = stop_on_solib_events; | |
12937 | } | |
12938 | else | |
12939 | bs->stop = 0; | |
06edf0c0 PA |
12940 | } |
12941 | ||
12942 | static enum print_stop_action | |
12943 | internal_bkpt_print_it (bpstat bs) | |
12944 | { | |
06edf0c0 | 12945 | struct breakpoint *b; |
06edf0c0 | 12946 | |
06edf0c0 PA |
12947 | b = bs->breakpoint_at; |
12948 | ||
06edf0c0 PA |
12949 | switch (b->type) |
12950 | { | |
348d480f PA |
12951 | case bp_shlib_event: |
12952 | /* Did we stop because the user set the stop_on_solib_events | |
12953 | variable? (If so, we report this as a generic, "Stopped due | |
12954 | to shlib event" message.) */ | |
edcc5120 | 12955 | print_solib_event (0); |
348d480f PA |
12956 | break; |
12957 | ||
12958 | case bp_thread_event: | |
12959 | /* Not sure how we will get here. | |
12960 | GDB should not stop for these breakpoints. */ | |
12961 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12962 | break; |
12963 | ||
12964 | case bp_overlay_event: | |
12965 | /* By analogy with the thread event, GDB should not stop for these. */ | |
12966 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12967 | break; |
12968 | ||
12969 | case bp_longjmp_master: | |
12970 | /* These should never be enabled. */ | |
12971 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12972 | break; |
12973 | ||
12974 | case bp_std_terminate_master: | |
12975 | /* These should never be enabled. */ | |
12976 | printf_filtered (_("std::terminate Master Breakpoint: " | |
12977 | "gdb should not stop!\n")); | |
348d480f PA |
12978 | break; |
12979 | ||
12980 | case bp_exception_master: | |
12981 | /* These should never be enabled. */ | |
12982 | printf_filtered (_("Exception Master Breakpoint: " | |
12983 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12984 | break; |
12985 | } | |
12986 | ||
001c8c33 | 12987 | return PRINT_NOTHING; |
06edf0c0 PA |
12988 | } |
12989 | ||
12990 | static void | |
12991 | internal_bkpt_print_mention (struct breakpoint *b) | |
12992 | { | |
12993 | /* Nothing to mention. These breakpoints are internal. */ | |
12994 | } | |
12995 | ||
06edf0c0 PA |
12996 | /* Virtual table for momentary breakpoints */ |
12997 | ||
12998 | static void | |
12999 | momentary_bkpt_re_set (struct breakpoint *b) | |
13000 | { | |
13001 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 13002 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
13003 | Otherwise these should have been blown away via the cleanup chain |
13004 | or by breakpoint_init_inferior when we rerun the executable. */ | |
13005 | } | |
13006 | ||
13007 | static void | |
13008 | momentary_bkpt_check_status (bpstat bs) | |
13009 | { | |
13010 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
13011 | } | |
13012 | ||
13013 | static enum print_stop_action | |
13014 | momentary_bkpt_print_it (bpstat bs) | |
13015 | { | |
001c8c33 | 13016 | return PRINT_UNKNOWN; |
348d480f PA |
13017 | } |
13018 | ||
06edf0c0 PA |
13019 | static void |
13020 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 13021 | { |
06edf0c0 | 13022 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
13023 | } |
13024 | ||
e2e4d78b JK |
13025 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
13026 | ||
13027 | It gets cleared already on the removal of the first one of such placed | |
13028 | breakpoints. This is OK as they get all removed altogether. */ | |
13029 | ||
c1fc2657 | 13030 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 13031 | { |
c1fc2657 | 13032 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 13033 | |
c1fc2657 | 13034 | if (tp != NULL) |
e2e4d78b | 13035 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
13036 | } |
13037 | ||
55aa24fb SDJ |
13038 | /* Specific methods for probe breakpoints. */ |
13039 | ||
13040 | static int | |
13041 | bkpt_probe_insert_location (struct bp_location *bl) | |
13042 | { | |
13043 | int v = bkpt_insert_location (bl); | |
13044 | ||
13045 | if (v == 0) | |
13046 | { | |
13047 | /* The insertion was successful, now let's set the probe's semaphore | |
13048 | if needed. */ | |
0ea5cda8 SDJ |
13049 | if (bl->probe.probe->pops->set_semaphore != NULL) |
13050 | bl->probe.probe->pops->set_semaphore (bl->probe.probe, | |
13051 | bl->probe.objfile, | |
13052 | bl->gdbarch); | |
55aa24fb SDJ |
13053 | } |
13054 | ||
13055 | return v; | |
13056 | } | |
13057 | ||
13058 | static int | |
73971819 PA |
13059 | bkpt_probe_remove_location (struct bp_location *bl, |
13060 | enum remove_bp_reason reason) | |
55aa24fb SDJ |
13061 | { |
13062 | /* Let's clear the semaphore before removing the location. */ | |
0ea5cda8 SDJ |
13063 | if (bl->probe.probe->pops->clear_semaphore != NULL) |
13064 | bl->probe.probe->pops->clear_semaphore (bl->probe.probe, | |
13065 | bl->probe.objfile, | |
13066 | bl->gdbarch); | |
55aa24fb | 13067 | |
73971819 | 13068 | return bkpt_remove_location (bl, reason); |
55aa24fb SDJ |
13069 | } |
13070 | ||
13071 | static void | |
f00aae0f | 13072 | bkpt_probe_create_sals_from_location (const struct event_location *location, |
5f700d83 | 13073 | struct linespec_result *canonical, |
f00aae0f | 13074 | enum bptype type_wanted) |
55aa24fb SDJ |
13075 | { |
13076 | struct linespec_sals lsal; | |
13077 | ||
c2f4122d | 13078 | lsal.sals = parse_probes (location, NULL, canonical); |
8e9e35b1 TT |
13079 | lsal.canonical |
13080 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 13081 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
13082 | } |
13083 | ||
6c5b2ebe | 13084 | static std::vector<symtab_and_line> |
f00aae0f KS |
13085 | bkpt_probe_decode_location (struct breakpoint *b, |
13086 | const struct event_location *location, | |
6c5b2ebe | 13087 | struct program_space *search_pspace) |
55aa24fb | 13088 | { |
6c5b2ebe PA |
13089 | std::vector<symtab_and_line> sals = parse_probes (location, search_pspace, NULL); |
13090 | if (sals.empty ()) | |
55aa24fb | 13091 | error (_("probe not found")); |
6c5b2ebe | 13092 | return sals; |
55aa24fb SDJ |
13093 | } |
13094 | ||
348d480f | 13095 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 13096 | |
348d480f PA |
13097 | static void |
13098 | tracepoint_re_set (struct breakpoint *b) | |
13099 | { | |
13100 | breakpoint_re_set_default (b); | |
13101 | } | |
876fa593 | 13102 | |
348d480f PA |
13103 | static int |
13104 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
09ac7c10 TT |
13105 | struct address_space *aspace, CORE_ADDR bp_addr, |
13106 | const struct target_waitstatus *ws) | |
348d480f PA |
13107 | { |
13108 | /* By definition, the inferior does not report stops at | |
13109 | tracepoints. */ | |
13110 | return 0; | |
74960c60 VP |
13111 | } |
13112 | ||
13113 | static void | |
348d480f PA |
13114 | tracepoint_print_one_detail (const struct breakpoint *self, |
13115 | struct ui_out *uiout) | |
74960c60 | 13116 | { |
d9b3f62e PA |
13117 | struct tracepoint *tp = (struct tracepoint *) self; |
13118 | if (tp->static_trace_marker_id) | |
348d480f PA |
13119 | { |
13120 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 13121 | |
112e8700 SM |
13122 | uiout->text ("\tmarker id is "); |
13123 | uiout->field_string ("static-tracepoint-marker-string-id", | |
d9b3f62e | 13124 | tp->static_trace_marker_id); |
112e8700 | 13125 | uiout->text ("\n"); |
348d480f | 13126 | } |
0d381245 VP |
13127 | } |
13128 | ||
a474d7c2 | 13129 | static void |
348d480f | 13130 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 13131 | { |
112e8700 | 13132 | if (current_uiout->is_mi_like_p ()) |
348d480f | 13133 | return; |
cc59ec59 | 13134 | |
348d480f PA |
13135 | switch (b->type) |
13136 | { | |
13137 | case bp_tracepoint: | |
13138 | printf_filtered (_("Tracepoint")); | |
13139 | printf_filtered (_(" %d"), b->number); | |
13140 | break; | |
13141 | case bp_fast_tracepoint: | |
13142 | printf_filtered (_("Fast tracepoint")); | |
13143 | printf_filtered (_(" %d"), b->number); | |
13144 | break; | |
13145 | case bp_static_tracepoint: | |
13146 | printf_filtered (_("Static tracepoint")); | |
13147 | printf_filtered (_(" %d"), b->number); | |
13148 | break; | |
13149 | default: | |
13150 | internal_error (__FILE__, __LINE__, | |
13151 | _("unhandled tracepoint type %d"), (int) b->type); | |
13152 | } | |
13153 | ||
13154 | say_where (b); | |
a474d7c2 PA |
13155 | } |
13156 | ||
348d480f | 13157 | static void |
d9b3f62e | 13158 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 13159 | { |
d9b3f62e PA |
13160 | struct tracepoint *tp = (struct tracepoint *) self; |
13161 | ||
13162 | if (self->type == bp_fast_tracepoint) | |
348d480f | 13163 | fprintf_unfiltered (fp, "ftrace"); |
c93e8391 | 13164 | else if (self->type == bp_static_tracepoint) |
348d480f | 13165 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 13166 | else if (self->type == bp_tracepoint) |
348d480f PA |
13167 | fprintf_unfiltered (fp, "trace"); |
13168 | else | |
13169 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 13170 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 13171 | |
f00aae0f | 13172 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 13173 | event_location_to_string (self->location.get ())); |
d9b3f62e PA |
13174 | print_recreate_thread (self, fp); |
13175 | ||
13176 | if (tp->pass_count) | |
13177 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
13178 | } |
13179 | ||
983af33b | 13180 | static void |
f00aae0f KS |
13181 | tracepoint_create_sals_from_location (const struct event_location *location, |
13182 | struct linespec_result *canonical, | |
13183 | enum bptype type_wanted) | |
983af33b | 13184 | { |
f00aae0f | 13185 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
13186 | } |
13187 | ||
13188 | static void | |
13189 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13190 | struct linespec_result *canonical, | |
e1e01040 PA |
13191 | gdb::unique_xmalloc_ptr<char> cond_string, |
13192 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13193 | enum bptype type_wanted, |
13194 | enum bpdisp disposition, | |
13195 | int thread, | |
13196 | int task, int ignore_count, | |
13197 | const struct breakpoint_ops *ops, | |
13198 | int from_tty, int enabled, | |
44f238bb | 13199 | int internal, unsigned flags) |
983af33b | 13200 | { |
023fa29b | 13201 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
13202 | std::move (cond_string), |
13203 | std::move (extra_string), | |
e7e0cddf | 13204 | type_wanted, |
983af33b SDJ |
13205 | disposition, thread, task, |
13206 | ignore_count, ops, from_tty, | |
44f238bb | 13207 | enabled, internal, flags); |
983af33b SDJ |
13208 | } |
13209 | ||
6c5b2ebe | 13210 | static std::vector<symtab_and_line> |
f00aae0f KS |
13211 | tracepoint_decode_location (struct breakpoint *b, |
13212 | const struct event_location *location, | |
6c5b2ebe | 13213 | struct program_space *search_pspace) |
983af33b | 13214 | { |
6c5b2ebe | 13215 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
13216 | } |
13217 | ||
2060206e | 13218 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 13219 | |
55aa24fb SDJ |
13220 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
13221 | static probe. */ | |
13222 | ||
13223 | static void | |
f00aae0f KS |
13224 | tracepoint_probe_create_sals_from_location |
13225 | (const struct event_location *location, | |
13226 | struct linespec_result *canonical, | |
13227 | enum bptype type_wanted) | |
55aa24fb SDJ |
13228 | { |
13229 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 13230 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
13231 | } |
13232 | ||
6c5b2ebe | 13233 | static std::vector<symtab_and_line> |
f00aae0f KS |
13234 | tracepoint_probe_decode_location (struct breakpoint *b, |
13235 | const struct event_location *location, | |
6c5b2ebe | 13236 | struct program_space *search_pspace) |
55aa24fb SDJ |
13237 | { |
13238 | /* We use the same method for breakpoint on probes. */ | |
6c5b2ebe | 13239 | return bkpt_probe_decode_location (b, location, search_pspace); |
55aa24fb SDJ |
13240 | } |
13241 | ||
13242 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
13243 | ||
5c2b4418 HZ |
13244 | /* Dprintf breakpoint_ops methods. */ |
13245 | ||
13246 | static void | |
13247 | dprintf_re_set (struct breakpoint *b) | |
13248 | { | |
13249 | breakpoint_re_set_default (b); | |
13250 | ||
f00aae0f KS |
13251 | /* extra_string should never be non-NULL for dprintf. */ |
13252 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
13253 | |
13254 | /* 1 - connect to target 1, that can run breakpoint commands. | |
13255 | 2 - create a dprintf, which resolves fine. | |
13256 | 3 - disconnect from target 1 | |
13257 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
13258 | ||
13259 | After steps #3/#4, you'll want the dprintf command list to | |
13260 | be updated, because target 1 and 2 may well return different | |
13261 | answers for target_can_run_breakpoint_commands(). | |
13262 | Given absence of finer grained resetting, we get to do | |
13263 | it all the time. */ | |
13264 | if (b->extra_string != NULL) | |
13265 | update_dprintf_command_list (b); | |
13266 | } | |
13267 | ||
2d9442cc HZ |
13268 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
13269 | ||
13270 | static void | |
13271 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
13272 | { | |
f00aae0f | 13273 | fprintf_unfiltered (fp, "dprintf %s,%s", |
d28cd78a | 13274 | event_location_to_string (tp->location.get ()), |
2d9442cc HZ |
13275 | tp->extra_string); |
13276 | print_recreate_thread (tp, fp); | |
13277 | } | |
13278 | ||
9d6e6e84 HZ |
13279 | /* Implement the "after_condition_true" breakpoint_ops method for |
13280 | dprintf. | |
13281 | ||
13282 | dprintf's are implemented with regular commands in their command | |
13283 | list, but we run the commands here instead of before presenting the | |
13284 | stop to the user, as dprintf's don't actually cause a stop. This | |
13285 | also makes it so that the commands of multiple dprintfs at the same | |
13286 | address are all handled. */ | |
13287 | ||
13288 | static void | |
13289 | dprintf_after_condition_true (struct bpstats *bs) | |
13290 | { | |
04afa70c | 13291 | struct bpstats tmp_bs; |
9d6e6e84 HZ |
13292 | struct bpstats *tmp_bs_p = &tmp_bs; |
13293 | ||
13294 | /* dprintf's never cause a stop. This wasn't set in the | |
13295 | check_status hook instead because that would make the dprintf's | |
13296 | condition not be evaluated. */ | |
13297 | bs->stop = 0; | |
13298 | ||
13299 | /* Run the command list here. Take ownership of it instead of | |
13300 | copying. We never want these commands to run later in | |
13301 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
13302 | be set at same address as this dprintf, or even if running the | |
13303 | commands here throws. */ | |
13304 | tmp_bs.commands = bs->commands; | |
13305 | bs->commands = NULL; | |
9d6e6e84 HZ |
13306 | |
13307 | bpstat_do_actions_1 (&tmp_bs_p); | |
13308 | ||
13309 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
13310 | bpstat_do_actions_1 may return early without processing the whole | |
13311 | list. */ | |
9d6e6e84 HZ |
13312 | } |
13313 | ||
983af33b SDJ |
13314 | /* The breakpoint_ops structure to be used on static tracepoints with |
13315 | markers (`-m'). */ | |
13316 | ||
13317 | static void | |
f00aae0f | 13318 | strace_marker_create_sals_from_location (const struct event_location *location, |
5f700d83 | 13319 | struct linespec_result *canonical, |
f00aae0f | 13320 | enum bptype type_wanted) |
983af33b SDJ |
13321 | { |
13322 | struct linespec_sals lsal; | |
f00aae0f | 13323 | const char *arg_start, *arg; |
983af33b | 13324 | |
f00aae0f KS |
13325 | arg = arg_start = get_linespec_location (location); |
13326 | lsal.sals = decode_static_tracepoint_spec (&arg); | |
983af33b | 13327 | |
f2fc3015 TT |
13328 | std::string str (arg_start, arg - arg_start); |
13329 | const char *ptr = str.c_str (); | |
13330 | canonical->location = new_linespec_location (&ptr); | |
983af33b | 13331 | |
8e9e35b1 TT |
13332 | lsal.canonical |
13333 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 13334 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
13335 | } |
13336 | ||
13337 | static void | |
13338 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13339 | struct linespec_result *canonical, | |
e1e01040 PA |
13340 | gdb::unique_xmalloc_ptr<char> cond_string, |
13341 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13342 | enum bptype type_wanted, |
13343 | enum bpdisp disposition, | |
13344 | int thread, | |
13345 | int task, int ignore_count, | |
13346 | const struct breakpoint_ops *ops, | |
13347 | int from_tty, int enabled, | |
44f238bb | 13348 | int internal, unsigned flags) |
983af33b | 13349 | { |
6c5b2ebe | 13350 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
13351 | |
13352 | /* If the user is creating a static tracepoint by marker id | |
13353 | (strace -m MARKER_ID), then store the sals index, so that | |
13354 | breakpoint_re_set can try to match up which of the newly | |
13355 | found markers corresponds to this one, and, don't try to | |
13356 | expand multiple locations for each sal, given than SALS | |
13357 | already should contain all sals for MARKER_ID. */ | |
13358 | ||
6c5b2ebe | 13359 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 13360 | { |
6c5b2ebe PA |
13361 | event_location_up location |
13362 | = copy_event_location (canonical->location.get ()); | |
983af33b | 13363 | |
b270e6f9 | 13364 | std::unique_ptr<tracepoint> tp (new tracepoint ()); |
6c5b2ebe | 13365 | init_breakpoint_sal (tp.get (), gdbarch, lsal.sals[i], |
ffc2605c | 13366 | std::move (location), NULL, |
e1e01040 PA |
13367 | std::move (cond_string), |
13368 | std::move (extra_string), | |
e7e0cddf | 13369 | type_wanted, disposition, |
983af33b | 13370 | thread, task, ignore_count, ops, |
44f238bb | 13371 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13372 | canonical->special_display); |
13373 | /* Given that its possible to have multiple markers with | |
13374 | the same string id, if the user is creating a static | |
13375 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13376 | store the sals index, so that breakpoint_re_set can | |
13377 | try to match up which of the newly found markers | |
13378 | corresponds to this one */ | |
13379 | tp->static_trace_marker_id_idx = i; | |
13380 | ||
b270e6f9 | 13381 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
13382 | } |
13383 | } | |
13384 | ||
6c5b2ebe | 13385 | static std::vector<symtab_and_line> |
f00aae0f KS |
13386 | strace_marker_decode_location (struct breakpoint *b, |
13387 | const struct event_location *location, | |
6c5b2ebe | 13388 | struct program_space *search_pspace) |
983af33b SDJ |
13389 | { |
13390 | struct tracepoint *tp = (struct tracepoint *) b; | |
f00aae0f | 13391 | const char *s = get_linespec_location (location); |
983af33b | 13392 | |
6c5b2ebe PA |
13393 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
13394 | if (sals.size () > tp->static_trace_marker_id_idx) | |
983af33b | 13395 | { |
6c5b2ebe PA |
13396 | sals[0] = sals[tp->static_trace_marker_id_idx]; |
13397 | sals.resize (1); | |
13398 | return sals; | |
983af33b SDJ |
13399 | } |
13400 | else | |
13401 | error (_("marker %s not found"), tp->static_trace_marker_id); | |
13402 | } | |
13403 | ||
13404 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13405 | ||
13406 | static int | |
13407 | strace_marker_p (struct breakpoint *b) | |
13408 | { | |
13409 | return b->ops == &strace_marker_breakpoint_ops; | |
13410 | } | |
13411 | ||
53a5351d | 13412 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13413 | structures. */ |
c906108c SS |
13414 | |
13415 | void | |
fba45db2 | 13416 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13417 | { |
52f0bd74 | 13418 | struct breakpoint *b; |
c906108c | 13419 | |
8a3fe4f8 | 13420 | gdb_assert (bpt != NULL); |
c906108c | 13421 | |
4a64f543 MS |
13422 | /* Has this bp already been deleted? This can happen because |
13423 | multiple lists can hold pointers to bp's. bpstat lists are | |
13424 | especial culprits. | |
13425 | ||
13426 | One example of this happening is a watchpoint's scope bp. When | |
13427 | the scope bp triggers, we notice that the watchpoint is out of | |
13428 | scope, and delete it. We also delete its scope bp. But the | |
13429 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13430 | That bpstat is then checked for auto-deleting bp's, which are | |
13431 | deleted. | |
13432 | ||
13433 | A real solution to this problem might involve reference counts in | |
13434 | bp's, and/or giving them pointers back to their referencing | |
13435 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13436 | storage when no more references were extent. A cheaper bandaid | |
13437 | was chosen. */ | |
c906108c SS |
13438 | if (bpt->type == bp_none) |
13439 | return; | |
13440 | ||
4a64f543 MS |
13441 | /* At least avoid this stale reference until the reference counting |
13442 | of breakpoints gets resolved. */ | |
d0fb5eae | 13443 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13444 | { |
d0fb5eae | 13445 | struct breakpoint *related; |
3a5c3e22 | 13446 | struct watchpoint *w; |
d0fb5eae JK |
13447 | |
13448 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13449 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13450 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13451 | w = (struct watchpoint *) bpt; |
13452 | else | |
13453 | w = NULL; | |
13454 | if (w != NULL) | |
13455 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13456 | |
13457 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13458 | for (related = bpt; related->related_breakpoint != bpt; | |
13459 | related = related->related_breakpoint); | |
13460 | related->related_breakpoint = bpt->related_breakpoint; | |
13461 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13462 | } |
13463 | ||
a9634178 TJB |
13464 | /* watch_command_1 creates a watchpoint but only sets its number if |
13465 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13466 | a problem in that process, we'll be asked to delete the half-created | |
13467 | watchpoint. In that case, don't announce the deletion. */ | |
13468 | if (bpt->number) | |
13469 | observer_notify_breakpoint_deleted (bpt); | |
c906108c | 13470 | |
c906108c SS |
13471 | if (breakpoint_chain == bpt) |
13472 | breakpoint_chain = bpt->next; | |
13473 | ||
c906108c SS |
13474 | ALL_BREAKPOINTS (b) |
13475 | if (b->next == bpt) | |
c5aa993b JM |
13476 | { |
13477 | b->next = bpt->next; | |
13478 | break; | |
13479 | } | |
c906108c | 13480 | |
f431efe5 PA |
13481 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13482 | been freed. */ | |
13483 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13484 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13485 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13486 | commands are associated with the bpstat; if we remove it here, | |
13487 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13488 | event-top.c won't do anything, and temporary breakpoints with | |
13489 | commands won't work. */ | |
13490 | ||
13491 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13492 | ||
4a64f543 MS |
13493 | /* Now that breakpoint is removed from breakpoint list, update the |
13494 | global location list. This will remove locations that used to | |
13495 | belong to this breakpoint. Do this before freeing the breakpoint | |
13496 | itself, since remove_breakpoint looks at location's owner. It | |
13497 | might be better design to have location completely | |
13498 | self-contained, but it's not the case now. */ | |
44702360 | 13499 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13500 | |
4a64f543 MS |
13501 | /* On the chance that someone will soon try again to delete this |
13502 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13503 | bpt->type = bp_none; |
4d01a485 | 13504 | delete bpt; |
c906108c SS |
13505 | } |
13506 | ||
4d6140d9 AC |
13507 | static void |
13508 | do_delete_breakpoint_cleanup (void *b) | |
13509 | { | |
9a3c8263 | 13510 | delete_breakpoint ((struct breakpoint *) b); |
4d6140d9 AC |
13511 | } |
13512 | ||
13513 | struct cleanup * | |
13514 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
13515 | { | |
13516 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
13517 | } | |
13518 | ||
51be5b68 PA |
13519 | /* Iterator function to call a user-provided callback function once |
13520 | for each of B and its related breakpoints. */ | |
13521 | ||
13522 | static void | |
13523 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 13524 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
13525 | { |
13526 | struct breakpoint *related; | |
13527 | ||
13528 | related = b; | |
13529 | do | |
13530 | { | |
13531 | struct breakpoint *next; | |
13532 | ||
13533 | /* FUNCTION may delete RELATED. */ | |
13534 | next = related->related_breakpoint; | |
13535 | ||
13536 | if (next == related) | |
13537 | { | |
13538 | /* RELATED is the last ring entry. */ | |
48649e1b | 13539 | function (related); |
51be5b68 PA |
13540 | |
13541 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13542 | B. There's nothing left to do anyway, so just break | |
13543 | out. */ | |
13544 | break; | |
13545 | } | |
13546 | else | |
48649e1b | 13547 | function (related); |
51be5b68 PA |
13548 | |
13549 | related = next; | |
13550 | } | |
13551 | while (related != b); | |
13552 | } | |
95a42b64 | 13553 | |
4495129a | 13554 | static void |
fba45db2 | 13555 | delete_command (char *arg, int from_tty) |
c906108c | 13556 | { |
35df4500 | 13557 | struct breakpoint *b, *b_tmp; |
c906108c | 13558 | |
ea9365bb TT |
13559 | dont_repeat (); |
13560 | ||
c906108c SS |
13561 | if (arg == 0) |
13562 | { | |
13563 | int breaks_to_delete = 0; | |
13564 | ||
46c6471b PA |
13565 | /* Delete all breakpoints if no argument. Do not delete |
13566 | internal breakpoints, these have to be deleted with an | |
13567 | explicit breakpoint number argument. */ | |
c5aa993b | 13568 | ALL_BREAKPOINTS (b) |
46c6471b | 13569 | if (user_breakpoint_p (b)) |
973d738b DJ |
13570 | { |
13571 | breaks_to_delete = 1; | |
13572 | break; | |
13573 | } | |
c906108c SS |
13574 | |
13575 | /* Ask user only if there are some breakpoints to delete. */ | |
13576 | if (!from_tty | |
e2e0b3e5 | 13577 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13578 | { |
35df4500 | 13579 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13580 | if (user_breakpoint_p (b)) |
c5aa993b | 13581 | delete_breakpoint (b); |
c906108c SS |
13582 | } |
13583 | } | |
13584 | else | |
48649e1b TT |
13585 | map_breakpoint_numbers |
13586 | (arg, [&] (breakpoint *b) | |
13587 | { | |
13588 | iterate_over_related_breakpoints (b, delete_breakpoint); | |
13589 | }); | |
c906108c SS |
13590 | } |
13591 | ||
c2f4122d PA |
13592 | /* Return true if all locations of B bound to PSPACE are pending. If |
13593 | PSPACE is NULL, all locations of all program spaces are | |
13594 | considered. */ | |
13595 | ||
0d381245 | 13596 | static int |
c2f4122d | 13597 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 13598 | { |
c2f4122d PA |
13599 | struct bp_location *loc; |
13600 | ||
13601 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
13602 | if ((pspace == NULL | |
13603 | || loc->pspace == pspace) | |
13604 | && !loc->shlib_disabled | |
8645ff69 | 13605 | && !loc->pspace->executing_startup) |
0d381245 VP |
13606 | return 0; |
13607 | return 1; | |
fe3f5fa8 VP |
13608 | } |
13609 | ||
776592bf DE |
13610 | /* Subroutine of update_breakpoint_locations to simplify it. |
13611 | Return non-zero if multiple fns in list LOC have the same name. | |
13612 | Null names are ignored. */ | |
13613 | ||
13614 | static int | |
13615 | ambiguous_names_p (struct bp_location *loc) | |
13616 | { | |
13617 | struct bp_location *l; | |
13618 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
13619 | (int (*) (const void *, |
13620 | const void *)) streq, | |
776592bf DE |
13621 | NULL, xcalloc, xfree); |
13622 | ||
13623 | for (l = loc; l != NULL; l = l->next) | |
13624 | { | |
13625 | const char **slot; | |
13626 | const char *name = l->function_name; | |
13627 | ||
13628 | /* Allow for some names to be NULL, ignore them. */ | |
13629 | if (name == NULL) | |
13630 | continue; | |
13631 | ||
13632 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13633 | INSERT); | |
4a64f543 MS |
13634 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13635 | returns NULL. */ | |
776592bf DE |
13636 | if (*slot != NULL) |
13637 | { | |
13638 | htab_delete (htab); | |
13639 | return 1; | |
13640 | } | |
13641 | *slot = name; | |
13642 | } | |
13643 | ||
13644 | htab_delete (htab); | |
13645 | return 0; | |
13646 | } | |
13647 | ||
0fb4aa4b PA |
13648 | /* When symbols change, it probably means the sources changed as well, |
13649 | and it might mean the static tracepoint markers are no longer at | |
13650 | the same address or line numbers they used to be at last we | |
13651 | checked. Losing your static tracepoints whenever you rebuild is | |
13652 | undesirable. This function tries to resync/rematch gdb static | |
13653 | tracepoints with the markers on the target, for static tracepoints | |
13654 | that have not been set by marker id. Static tracepoint that have | |
13655 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13656 | The heuristic is: | |
13657 | ||
13658 | 1) For a tracepoint set at a specific address, look for a marker at | |
13659 | the old PC. If one is found there, assume to be the same marker. | |
13660 | If the name / string id of the marker found is different from the | |
13661 | previous known name, assume that means the user renamed the marker | |
13662 | in the sources, and output a warning. | |
13663 | ||
13664 | 2) For a tracepoint set at a given line number, look for a marker | |
13665 | at the new address of the old line number. If one is found there, | |
13666 | assume to be the same marker. If the name / string id of the | |
13667 | marker found is different from the previous known name, assume that | |
13668 | means the user renamed the marker in the sources, and output a | |
13669 | warning. | |
13670 | ||
13671 | 3) If a marker is no longer found at the same address or line, it | |
13672 | may mean the marker no longer exists. But it may also just mean | |
13673 | the code changed a bit. Maybe the user added a few lines of code | |
13674 | that made the marker move up or down (in line number terms). Ask | |
13675 | the target for info about the marker with the string id as we knew | |
13676 | it. If found, update line number and address in the matching | |
13677 | static tracepoint. This will get confused if there's more than one | |
13678 | marker with the same ID (possible in UST, although unadvised | |
13679 | precisely because it confuses tools). */ | |
13680 | ||
13681 | static struct symtab_and_line | |
13682 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13683 | { | |
d9b3f62e | 13684 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13685 | struct static_tracepoint_marker marker; |
13686 | CORE_ADDR pc; | |
0fb4aa4b PA |
13687 | |
13688 | pc = sal.pc; | |
13689 | if (sal.line) | |
13690 | find_line_pc (sal.symtab, sal.line, &pc); | |
13691 | ||
13692 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13693 | { | |
d9b3f62e | 13694 | if (strcmp (tp->static_trace_marker_id, marker.str_id) != 0) |
0fb4aa4b PA |
13695 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
13696 | b->number, | |
d9b3f62e | 13697 | tp->static_trace_marker_id, marker.str_id); |
0fb4aa4b | 13698 | |
d9b3f62e PA |
13699 | xfree (tp->static_trace_marker_id); |
13700 | tp->static_trace_marker_id = xstrdup (marker.str_id); | |
0fb4aa4b PA |
13701 | release_static_tracepoint_marker (&marker); |
13702 | ||
13703 | return sal; | |
13704 | } | |
13705 | ||
13706 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13707 | by string ID. */ | |
13708 | if (!sal.explicit_pc | |
13709 | && sal.line != 0 | |
13710 | && sal.symtab != NULL | |
d9b3f62e | 13711 | && tp->static_trace_marker_id != NULL) |
0fb4aa4b PA |
13712 | { |
13713 | VEC(static_tracepoint_marker_p) *markers; | |
13714 | ||
13715 | markers | |
d9b3f62e | 13716 | = target_static_tracepoint_markers_by_strid (tp->static_trace_marker_id); |
0fb4aa4b PA |
13717 | |
13718 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
13719 | { | |
0fb4aa4b | 13720 | struct symbol *sym; |
80e1d417 | 13721 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13722 | struct ui_out *uiout = current_uiout; |
67994074 | 13723 | struct explicit_location explicit_loc; |
0fb4aa4b | 13724 | |
80e1d417 | 13725 | tpmarker = VEC_index (static_tracepoint_marker_p, markers, 0); |
0fb4aa4b | 13726 | |
d9b3f62e | 13727 | xfree (tp->static_trace_marker_id); |
80e1d417 | 13728 | tp->static_trace_marker_id = xstrdup (tpmarker->str_id); |
0fb4aa4b PA |
13729 | |
13730 | warning (_("marker for static tracepoint %d (%s) not " | |
13731 | "found at previous line number"), | |
d9b3f62e | 13732 | b->number, tp->static_trace_marker_id); |
0fb4aa4b | 13733 | |
51abb421 | 13734 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 13735 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 13736 | uiout->text ("Now in "); |
0fb4aa4b PA |
13737 | if (sym) |
13738 | { | |
112e8700 SM |
13739 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym)); |
13740 | uiout->text (" at "); | |
0fb4aa4b | 13741 | } |
112e8700 | 13742 | uiout->field_string ("file", |
05cba821 | 13743 | symtab_to_filename_for_display (sal2.symtab)); |
112e8700 | 13744 | uiout->text (":"); |
0fb4aa4b | 13745 | |
112e8700 | 13746 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 13747 | { |
0b0865da | 13748 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13749 | |
112e8700 | 13750 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
13751 | } |
13752 | ||
112e8700 SM |
13753 | uiout->field_int ("line", sal2.line); |
13754 | uiout->text ("\n"); | |
0fb4aa4b | 13755 | |
80e1d417 | 13756 | b->loc->line_number = sal2.line; |
2f202fde | 13757 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 13758 | |
d28cd78a | 13759 | b->location.reset (NULL); |
67994074 KS |
13760 | initialize_explicit_location (&explicit_loc); |
13761 | explicit_loc.source_filename | |
00e52e53 | 13762 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
13763 | explicit_loc.line_offset.offset = b->loc->line_number; |
13764 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
d28cd78a | 13765 | b->location = new_explicit_location (&explicit_loc); |
0fb4aa4b PA |
13766 | |
13767 | /* Might be nice to check if function changed, and warn if | |
13768 | so. */ | |
13769 | ||
80e1d417 | 13770 | release_static_tracepoint_marker (tpmarker); |
0fb4aa4b PA |
13771 | } |
13772 | } | |
13773 | return sal; | |
13774 | } | |
13775 | ||
8d3788bd VP |
13776 | /* Returns 1 iff locations A and B are sufficiently same that |
13777 | we don't need to report breakpoint as changed. */ | |
13778 | ||
13779 | static int | |
13780 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13781 | { | |
13782 | while (a && b) | |
13783 | { | |
13784 | if (a->address != b->address) | |
13785 | return 0; | |
13786 | ||
13787 | if (a->shlib_disabled != b->shlib_disabled) | |
13788 | return 0; | |
13789 | ||
13790 | if (a->enabled != b->enabled) | |
13791 | return 0; | |
13792 | ||
13793 | a = a->next; | |
13794 | b = b->next; | |
13795 | } | |
13796 | ||
13797 | if ((a == NULL) != (b == NULL)) | |
13798 | return 0; | |
13799 | ||
13800 | return 1; | |
13801 | } | |
13802 | ||
c2f4122d PA |
13803 | /* Split all locations of B that are bound to PSPACE out of B's |
13804 | location list to a separate list and return that list's head. If | |
13805 | PSPACE is NULL, hoist out all locations of B. */ | |
13806 | ||
13807 | static struct bp_location * | |
13808 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
13809 | { | |
13810 | struct bp_location head; | |
13811 | struct bp_location *i = b->loc; | |
13812 | struct bp_location **i_link = &b->loc; | |
13813 | struct bp_location *hoisted = &head; | |
13814 | ||
13815 | if (pspace == NULL) | |
13816 | { | |
13817 | i = b->loc; | |
13818 | b->loc = NULL; | |
13819 | return i; | |
13820 | } | |
13821 | ||
13822 | head.next = NULL; | |
13823 | ||
13824 | while (i != NULL) | |
13825 | { | |
13826 | if (i->pspace == pspace) | |
13827 | { | |
13828 | *i_link = i->next; | |
13829 | i->next = NULL; | |
13830 | hoisted->next = i; | |
13831 | hoisted = i; | |
13832 | } | |
13833 | else | |
13834 | i_link = &i->next; | |
13835 | i = *i_link; | |
13836 | } | |
13837 | ||
13838 | return head.next; | |
13839 | } | |
13840 | ||
13841 | /* Create new breakpoint locations for B (a hardware or software | |
13842 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
13843 | zero, then B is a ranged breakpoint. Only recreates locations for | |
13844 | FILTER_PSPACE. Locations of other program spaces are left | |
13845 | untouched. */ | |
f1310107 | 13846 | |
0e30163f | 13847 | void |
0d381245 | 13848 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 13849 | struct program_space *filter_pspace, |
6c5b2ebe PA |
13850 | gdb::array_view<const symtab_and_line> sals, |
13851 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 VP |
13852 | { |
13853 | int i; | |
c2f4122d | 13854 | struct bp_location *existing_locations; |
0d381245 | 13855 | |
6c5b2ebe | 13856 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
13857 | { |
13858 | /* Ranged breakpoints have only one start location and one end | |
13859 | location. */ | |
13860 | b->enable_state = bp_disabled; | |
f8eba3c6 TT |
13861 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
13862 | "multiple locations found\n"), | |
13863 | b->number); | |
13864 | return; | |
13865 | } | |
f1310107 | 13866 | |
4a64f543 MS |
13867 | /* If there's no new locations, and all existing locations are |
13868 | pending, don't do anything. This optimizes the common case where | |
13869 | all locations are in the same shared library, that was unloaded. | |
13870 | We'd like to retain the location, so that when the library is | |
13871 | loaded again, we don't loose the enabled/disabled status of the | |
13872 | individual locations. */ | |
6c5b2ebe | 13873 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
13874 | return; |
13875 | ||
c2f4122d | 13876 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 13877 | |
6c5b2ebe | 13878 | for (const auto &sal : sals) |
fe3f5fa8 | 13879 | { |
f8eba3c6 TT |
13880 | struct bp_location *new_loc; |
13881 | ||
6c5b2ebe | 13882 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 13883 | |
6c5b2ebe | 13884 | new_loc = add_location_to_breakpoint (b, &sal); |
fe3f5fa8 | 13885 | |
0d381245 VP |
13886 | /* Reparse conditions, they might contain references to the |
13887 | old symtab. */ | |
13888 | if (b->cond_string != NULL) | |
13889 | { | |
bbc13ae3 | 13890 | const char *s; |
fe3f5fa8 | 13891 | |
0d381245 | 13892 | s = b->cond_string; |
492d29ea | 13893 | TRY |
0d381245 | 13894 | { |
6c5b2ebe PA |
13895 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
13896 | block_for_pc (sal.pc), | |
0d381245 VP |
13897 | 0); |
13898 | } | |
492d29ea | 13899 | CATCH (e, RETURN_MASK_ERROR) |
0d381245 | 13900 | { |
3e43a32a MS |
13901 | warning (_("failed to reevaluate condition " |
13902 | "for breakpoint %d: %s"), | |
0d381245 VP |
13903 | b->number, e.message); |
13904 | new_loc->enabled = 0; | |
13905 | } | |
492d29ea | 13906 | END_CATCH |
0d381245 | 13907 | } |
fe3f5fa8 | 13908 | |
6c5b2ebe | 13909 | if (!sals_end.empty ()) |
f1310107 | 13910 | { |
6c5b2ebe | 13911 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 13912 | |
6c5b2ebe | 13913 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 13914 | } |
0d381245 | 13915 | } |
fe3f5fa8 | 13916 | |
4a64f543 MS |
13917 | /* If possible, carry over 'disable' status from existing |
13918 | breakpoints. */ | |
0d381245 VP |
13919 | { |
13920 | struct bp_location *e = existing_locations; | |
776592bf DE |
13921 | /* If there are multiple breakpoints with the same function name, |
13922 | e.g. for inline functions, comparing function names won't work. | |
13923 | Instead compare pc addresses; this is just a heuristic as things | |
13924 | may have moved, but in practice it gives the correct answer | |
13925 | often enough until a better solution is found. */ | |
13926 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13927 | ||
0d381245 VP |
13928 | for (; e; e = e->next) |
13929 | { | |
13930 | if (!e->enabled && e->function_name) | |
13931 | { | |
13932 | struct bp_location *l = b->loc; | |
776592bf DE |
13933 | if (have_ambiguous_names) |
13934 | { | |
13935 | for (; l; l = l->next) | |
f1310107 | 13936 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
13937 | { |
13938 | l->enabled = 0; | |
13939 | break; | |
13940 | } | |
13941 | } | |
13942 | else | |
13943 | { | |
13944 | for (; l; l = l->next) | |
13945 | if (l->function_name | |
13946 | && strcmp (e->function_name, l->function_name) == 0) | |
13947 | { | |
13948 | l->enabled = 0; | |
13949 | break; | |
13950 | } | |
13951 | } | |
0d381245 VP |
13952 | } |
13953 | } | |
13954 | } | |
fe3f5fa8 | 13955 | |
8d3788bd VP |
13956 | if (!locations_are_equal (existing_locations, b->loc)) |
13957 | observer_notify_breakpoint_modified (b); | |
fe3f5fa8 VP |
13958 | } |
13959 | ||
f00aae0f | 13960 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
13961 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
13962 | ||
6c5b2ebe | 13963 | static std::vector<symtab_and_line> |
f00aae0f | 13964 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 13965 | struct program_space *search_pspace, int *found) |
ef23e705 | 13966 | { |
492d29ea | 13967 | struct gdb_exception exception = exception_none; |
ef23e705 | 13968 | |
983af33b | 13969 | gdb_assert (b->ops != NULL); |
ef23e705 | 13970 | |
6c5b2ebe PA |
13971 | std::vector<symtab_and_line> sals; |
13972 | ||
492d29ea | 13973 | TRY |
ef23e705 | 13974 | { |
6c5b2ebe | 13975 | sals = b->ops->decode_location (b, location, search_pspace); |
ef23e705 | 13976 | } |
492d29ea | 13977 | CATCH (e, RETURN_MASK_ERROR) |
ef23e705 TJB |
13978 | { |
13979 | int not_found_and_ok = 0; | |
492d29ea PA |
13980 | |
13981 | exception = e; | |
13982 | ||
ef23e705 TJB |
13983 | /* For pending breakpoints, it's expected that parsing will |
13984 | fail until the right shared library is loaded. User has | |
13985 | already told to create pending breakpoints and don't need | |
13986 | extra messages. If breakpoint is in bp_shlib_disabled | |
13987 | state, then user already saw the message about that | |
13988 | breakpoint being disabled, and don't want to see more | |
13989 | errors. */ | |
58438ac1 | 13990 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
13991 | && (b->condition_not_parsed |
13992 | || (b->loc != NULL | |
13993 | && search_pspace != NULL | |
13994 | && b->loc->pspace != search_pspace) | |
ef23e705 | 13995 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 13996 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
13997 | || b->enable_state == bp_disabled)) |
13998 | not_found_and_ok = 1; | |
13999 | ||
14000 | if (!not_found_and_ok) | |
14001 | { | |
14002 | /* We surely don't want to warn about the same breakpoint | |
14003 | 10 times. One solution, implemented here, is disable | |
14004 | the breakpoint on error. Another solution would be to | |
14005 | have separate 'warning emitted' flag. Since this | |
14006 | happens only when a binary has changed, I don't know | |
14007 | which approach is better. */ | |
14008 | b->enable_state = bp_disabled; | |
14009 | throw_exception (e); | |
14010 | } | |
14011 | } | |
492d29ea | 14012 | END_CATCH |
ef23e705 | 14013 | |
492d29ea | 14014 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 14015 | { |
6c5b2ebe PA |
14016 | for (auto &sal : sals) |
14017 | resolve_sal_pc (&sal); | |
f00aae0f | 14018 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 14019 | { |
ed1d1739 KS |
14020 | char *cond_string, *extra_string; |
14021 | int thread, task; | |
ef23e705 | 14022 | |
6c5b2ebe | 14023 | find_condition_and_thread (b->extra_string, sals[0].pc, |
e7e0cddf SS |
14024 | &cond_string, &thread, &task, |
14025 | &extra_string); | |
f00aae0f | 14026 | gdb_assert (b->cond_string == NULL); |
ef23e705 TJB |
14027 | if (cond_string) |
14028 | b->cond_string = cond_string; | |
14029 | b->thread = thread; | |
14030 | b->task = task; | |
e7e0cddf | 14031 | if (extra_string) |
f00aae0f KS |
14032 | { |
14033 | xfree (b->extra_string); | |
14034 | b->extra_string = extra_string; | |
14035 | } | |
ef23e705 TJB |
14036 | b->condition_not_parsed = 0; |
14037 | } | |
14038 | ||
983af33b | 14039 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
6c5b2ebe | 14040 | sals[0] = update_static_tracepoint (b, sals[0]); |
ef23e705 | 14041 | |
58438ac1 TT |
14042 | *found = 1; |
14043 | } | |
14044 | else | |
14045 | *found = 0; | |
ef23e705 TJB |
14046 | |
14047 | return sals; | |
14048 | } | |
14049 | ||
348d480f PA |
14050 | /* The default re_set method, for typical hardware or software |
14051 | breakpoints. Reevaluate the breakpoint and recreate its | |
14052 | locations. */ | |
14053 | ||
14054 | static void | |
28010a5d | 14055 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 | 14056 | { |
c2f4122d | 14057 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 14058 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 14059 | |
6c5b2ebe PA |
14060 | int found; |
14061 | std::vector<symtab_and_line> sals = location_to_sals (b, b->location.get (), | |
14062 | filter_pspace, &found); | |
ef23e705 | 14063 | if (found) |
6c5b2ebe | 14064 | expanded = std::move (sals); |
ef23e705 | 14065 | |
f00aae0f | 14066 | if (b->location_range_end != NULL) |
f1310107 | 14067 | { |
6c5b2ebe PA |
14068 | std::vector<symtab_and_line> sals_end |
14069 | = location_to_sals (b, b->location_range_end.get (), | |
14070 | filter_pspace, &found); | |
f1310107 | 14071 | if (found) |
6c5b2ebe | 14072 | expanded_end = std::move (sals_end); |
f1310107 TJB |
14073 | } |
14074 | ||
c2f4122d | 14075 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
14076 | } |
14077 | ||
983af33b SDJ |
14078 | /* Default method for creating SALs from an address string. It basically |
14079 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
14080 | ||
14081 | static void | |
f00aae0f KS |
14082 | create_sals_from_location_default (const struct event_location *location, |
14083 | struct linespec_result *canonical, | |
14084 | enum bptype type_wanted) | |
983af33b | 14085 | { |
f00aae0f | 14086 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
14087 | } |
14088 | ||
14089 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
14090 | function for the `create_breakpoints_sal' method of | |
14091 | breakpoint_ops. */ | |
14092 | ||
14093 | static void | |
14094 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
14095 | struct linespec_result *canonical, | |
e1e01040 PA |
14096 | gdb::unique_xmalloc_ptr<char> cond_string, |
14097 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
14098 | enum bptype type_wanted, |
14099 | enum bpdisp disposition, | |
14100 | int thread, | |
14101 | int task, int ignore_count, | |
14102 | const struct breakpoint_ops *ops, | |
14103 | int from_tty, int enabled, | |
44f238bb | 14104 | int internal, unsigned flags) |
983af33b | 14105 | { |
e1e01040 PA |
14106 | create_breakpoints_sal (gdbarch, canonical, |
14107 | std::move (cond_string), | |
14108 | std::move (extra_string), | |
983af33b SDJ |
14109 | type_wanted, disposition, |
14110 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 14111 | enabled, internal, flags); |
983af33b SDJ |
14112 | } |
14113 | ||
14114 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 14115 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 14116 | |
6c5b2ebe | 14117 | static std::vector<symtab_and_line> |
f00aae0f KS |
14118 | decode_location_default (struct breakpoint *b, |
14119 | const struct event_location *location, | |
6c5b2ebe | 14120 | struct program_space *search_pspace) |
983af33b SDJ |
14121 | { |
14122 | struct linespec_result canonical; | |
14123 | ||
c2f4122d | 14124 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
983af33b SDJ |
14125 | (struct symtab *) NULL, 0, |
14126 | &canonical, multiple_symbols_all, | |
14127 | b->filter); | |
14128 | ||
14129 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 14130 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 14131 | |
6c5b2ebe | 14132 | if (!canonical.lsals.empty ()) |
983af33b | 14133 | { |
6c5b2ebe PA |
14134 | const linespec_sals &lsal = canonical.lsals[0]; |
14135 | return std::move (lsal.sals); | |
983af33b | 14136 | } |
6c5b2ebe | 14137 | return {}; |
983af33b SDJ |
14138 | } |
14139 | ||
28010a5d PA |
14140 | /* Prepare the global context for a re-set of breakpoint B. */ |
14141 | ||
14142 | static struct cleanup * | |
14143 | prepare_re_set_context (struct breakpoint *b) | |
14144 | { | |
28010a5d | 14145 | input_radix = b->input_radix; |
28010a5d PA |
14146 | set_language (b->language); |
14147 | ||
c2f4122d | 14148 | return make_cleanup (null_cleanup, NULL); |
ef23e705 TJB |
14149 | } |
14150 | ||
c906108c SS |
14151 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
14152 | The value we return ends up being the return value from catch_errors. | |
14153 | Unused in this case. */ | |
14154 | ||
14155 | static int | |
4efb68b1 | 14156 | breakpoint_re_set_one (void *bint) |
c906108c | 14157 | { |
4a64f543 | 14158 | /* Get past catch_errs. */ |
53a5351d | 14159 | struct breakpoint *b = (struct breakpoint *) bint; |
348d480f | 14160 | struct cleanup *cleanups; |
c906108c | 14161 | |
348d480f PA |
14162 | cleanups = prepare_re_set_context (b); |
14163 | b->ops->re_set (b); | |
14164 | do_cleanups (cleanups); | |
c906108c SS |
14165 | return 0; |
14166 | } | |
14167 | ||
c2f4122d PA |
14168 | /* Re-set breakpoint locations for the current program space. |
14169 | Locations bound to other program spaces are left untouched. */ | |
14170 | ||
c906108c | 14171 | void |
69de3c6a | 14172 | breakpoint_re_set (void) |
c906108c | 14173 | { |
35df4500 | 14174 | struct breakpoint *b, *b_tmp; |
c906108c SS |
14175 | enum language save_language; |
14176 | int save_input_radix; | |
c5aa993b | 14177 | |
c906108c SS |
14178 | save_language = current_language->la_language; |
14179 | save_input_radix = input_radix; | |
2a7f3dff | 14180 | |
c5aa993b | 14181 | { |
5ed8105e | 14182 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 14183 | |
5ed8105e PA |
14184 | /* Note: we must not try to insert locations until after all |
14185 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
14186 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
14187 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 14188 | |
5ed8105e PA |
14189 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
14190 | { | |
14191 | /* Format possible error msg. */ | |
14192 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", | |
14193 | b->number); | |
14194 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
14195 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); | |
14196 | do_cleanups (cleanups); | |
14197 | } | |
14198 | set_language (save_language); | |
14199 | input_radix = save_input_radix; | |
14200 | ||
14201 | jit_breakpoint_re_set (); | |
14202 | } | |
6c95b8df | 14203 | |
af02033e PP |
14204 | create_overlay_event_breakpoint (); |
14205 | create_longjmp_master_breakpoint (); | |
14206 | create_std_terminate_master_breakpoint (); | |
186c406b | 14207 | create_exception_master_breakpoint (); |
2a7f3dff PA |
14208 | |
14209 | /* Now we can insert. */ | |
14210 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
14211 | } |
14212 | \f | |
c906108c SS |
14213 | /* Reset the thread number of this breakpoint: |
14214 | ||
14215 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 14216 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 14217 | void |
fba45db2 | 14218 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
14219 | { |
14220 | if (b->thread != -1) | |
14221 | { | |
39f77062 | 14222 | if (in_thread_list (inferior_ptid)) |
5d5658a1 | 14223 | b->thread = ptid_to_global_thread_id (inferior_ptid); |
6c95b8df PA |
14224 | |
14225 | /* We're being called after following a fork. The new fork is | |
14226 | selected as current, and unless this was a vfork will have a | |
14227 | different program space from the original thread. Reset that | |
14228 | as well. */ | |
14229 | b->loc->pspace = current_program_space; | |
c906108c SS |
14230 | } |
14231 | } | |
14232 | ||
03ac34d5 MS |
14233 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14234 | If from_tty is nonzero, it prints a message to that effect, | |
14235 | which ends with a period (no newline). */ | |
14236 | ||
c906108c | 14237 | void |
fba45db2 | 14238 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 14239 | { |
52f0bd74 | 14240 | struct breakpoint *b; |
c906108c SS |
14241 | |
14242 | if (count < 0) | |
14243 | count = 0; | |
14244 | ||
14245 | ALL_BREAKPOINTS (b) | |
14246 | if (b->number == bptnum) | |
c5aa993b | 14247 | { |
d77f58be SS |
14248 | if (is_tracepoint (b)) |
14249 | { | |
14250 | if (from_tty && count != 0) | |
14251 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
14252 | bptnum); | |
14253 | return; | |
14254 | } | |
14255 | ||
c5aa993b | 14256 | b->ignore_count = count; |
221ea385 KS |
14257 | if (from_tty) |
14258 | { | |
14259 | if (count == 0) | |
3e43a32a MS |
14260 | printf_filtered (_("Will stop next time " |
14261 | "breakpoint %d is reached."), | |
221ea385 KS |
14262 | bptnum); |
14263 | else if (count == 1) | |
a3f17187 | 14264 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
14265 | bptnum); |
14266 | else | |
3e43a32a MS |
14267 | printf_filtered (_("Will ignore next %d " |
14268 | "crossings of breakpoint %d."), | |
221ea385 KS |
14269 | count, bptnum); |
14270 | } | |
8d3788bd | 14271 | observer_notify_breakpoint_modified (b); |
c5aa993b JM |
14272 | return; |
14273 | } | |
c906108c | 14274 | |
8a3fe4f8 | 14275 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
14276 | } |
14277 | ||
c906108c SS |
14278 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
14279 | ||
14280 | static void | |
fba45db2 | 14281 | ignore_command (char *args, int from_tty) |
c906108c SS |
14282 | { |
14283 | char *p = args; | |
52f0bd74 | 14284 | int num; |
c906108c SS |
14285 | |
14286 | if (p == 0) | |
e2e0b3e5 | 14287 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 14288 | |
c906108c | 14289 | num = get_number (&p); |
5c44784c | 14290 | if (num == 0) |
8a3fe4f8 | 14291 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 14292 | if (*p == 0) |
8a3fe4f8 | 14293 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
14294 | |
14295 | set_ignore_count (num, | |
14296 | longest_to_int (value_as_long (parse_and_eval (p))), | |
14297 | from_tty); | |
221ea385 KS |
14298 | if (from_tty) |
14299 | printf_filtered ("\n"); | |
c906108c SS |
14300 | } |
14301 | \f | |
14302 | /* Call FUNCTION on each of the breakpoints | |
14303 | whose numbers are given in ARGS. */ | |
14304 | ||
14305 | static void | |
896b6bda | 14306 | map_breakpoint_numbers (const char *args, |
48649e1b | 14307 | gdb::function_view<void (breakpoint *)> function) |
c906108c | 14308 | { |
52f0bd74 AC |
14309 | int num; |
14310 | struct breakpoint *b, *tmp; | |
c906108c | 14311 | |
b9d61307 | 14312 | if (args == 0 || *args == '\0') |
e2e0b3e5 | 14313 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c | 14314 | |
bfd28288 | 14315 | number_or_range_parser parser (args); |
197f0a60 | 14316 | |
bfd28288 | 14317 | while (!parser.finished ()) |
c906108c | 14318 | { |
bfd28288 PA |
14319 | const char *p = parser.cur_tok (); |
14320 | bool match = false; | |
197f0a60 | 14321 | |
bfd28288 | 14322 | num = parser.get_number (); |
5c44784c | 14323 | if (num == 0) |
c5aa993b | 14324 | { |
8a3fe4f8 | 14325 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
14326 | } |
14327 | else | |
14328 | { | |
14329 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
14330 | if (b->number == num) | |
14331 | { | |
bfd28288 | 14332 | match = true; |
48649e1b | 14333 | function (b); |
11cf8741 | 14334 | break; |
5c44784c | 14335 | } |
bfd28288 | 14336 | if (!match) |
a3f17187 | 14337 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 14338 | } |
c906108c SS |
14339 | } |
14340 | } | |
14341 | ||
0d381245 | 14342 | static struct bp_location * |
cb791d59 | 14343 | find_location_by_number (const char *number) |
0d381245 | 14344 | { |
cb791d59 | 14345 | const char *p1; |
0d381245 VP |
14346 | int bp_num; |
14347 | int loc_num; | |
14348 | struct breakpoint *b; | |
14349 | struct bp_location *loc; | |
14350 | ||
0d381245 | 14351 | p1 = number; |
cb791d59 TT |
14352 | bp_num = get_number_trailer (&p1, '.'); |
14353 | if (bp_num == 0 || p1[0] != '.') | |
0d381245 VP |
14354 | error (_("Bad breakpoint number '%s'"), number); |
14355 | ||
14356 | ALL_BREAKPOINTS (b) | |
14357 | if (b->number == bp_num) | |
14358 | { | |
14359 | break; | |
14360 | } | |
14361 | ||
14362 | if (!b || b->number != bp_num) | |
14363 | error (_("Bad breakpoint number '%s'"), number); | |
14364 | ||
cb791d59 TT |
14365 | /* Skip the dot. */ |
14366 | ++p1; | |
14367 | const char *save = p1; | |
197f0a60 | 14368 | loc_num = get_number (&p1); |
0d381245 VP |
14369 | if (loc_num == 0) |
14370 | error (_("Bad breakpoint location number '%s'"), number); | |
14371 | ||
14372 | --loc_num; | |
14373 | loc = b->loc; | |
14374 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
14375 | ; | |
14376 | if (!loc) | |
cb791d59 | 14377 | error (_("Bad breakpoint location number '%s'"), save); |
0d381245 VP |
14378 | |
14379 | return loc; | |
14380 | } | |
14381 | ||
14382 | ||
1900040c MS |
14383 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14384 | If from_tty is nonzero, it prints a message to that effect, | |
14385 | which ends with a period (no newline). */ | |
14386 | ||
c906108c | 14387 | void |
fba45db2 | 14388 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14389 | { |
14390 | /* Never disable a watchpoint scope breakpoint; we want to | |
14391 | hit them when we leave scope so we can delete both the | |
14392 | watchpoint and its scope breakpoint at that time. */ | |
14393 | if (bpt->type == bp_watchpoint_scope) | |
14394 | return; | |
14395 | ||
b5de0fa7 | 14396 | bpt->enable_state = bp_disabled; |
c906108c | 14397 | |
b775012e LM |
14398 | /* Mark breakpoint locations modified. */ |
14399 | mark_breakpoint_modified (bpt); | |
14400 | ||
d248b706 KY |
14401 | if (target_supports_enable_disable_tracepoint () |
14402 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14403 | { | |
14404 | struct bp_location *location; | |
14405 | ||
14406 | for (location = bpt->loc; location; location = location->next) | |
14407 | target_disable_tracepoint (location); | |
14408 | } | |
14409 | ||
44702360 | 14410 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14411 | |
8d3788bd | 14412 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14413 | } |
14414 | ||
c906108c | 14415 | static void |
fba45db2 | 14416 | disable_command (char *args, int from_tty) |
c906108c | 14417 | { |
c906108c | 14418 | if (args == 0) |
46c6471b PA |
14419 | { |
14420 | struct breakpoint *bpt; | |
14421 | ||
14422 | ALL_BREAKPOINTS (bpt) | |
14423 | if (user_breakpoint_p (bpt)) | |
14424 | disable_breakpoint (bpt); | |
14425 | } | |
9eaabc75 | 14426 | else |
0d381245 | 14427 | { |
cb791d59 | 14428 | std::string num = extract_arg (&args); |
9eaabc75 | 14429 | |
cb791d59 | 14430 | while (!num.empty ()) |
d248b706 | 14431 | { |
cb791d59 | 14432 | if (num.find ('.') != std::string::npos) |
b775012e | 14433 | { |
cb791d59 | 14434 | struct bp_location *loc = find_location_by_number (num.c_str ()); |
9eaabc75 MW |
14435 | |
14436 | if (loc) | |
14437 | { | |
14438 | if (loc->enabled) | |
14439 | { | |
14440 | loc->enabled = 0; | |
14441 | mark_breakpoint_location_modified (loc); | |
14442 | } | |
14443 | if (target_supports_enable_disable_tracepoint () | |
14444 | && current_trace_status ()->running && loc->owner | |
14445 | && is_tracepoint (loc->owner)) | |
14446 | target_disable_tracepoint (loc); | |
14447 | } | |
44702360 | 14448 | update_global_location_list (UGLL_DONT_INSERT); |
b775012e | 14449 | } |
9eaabc75 | 14450 | else |
48649e1b TT |
14451 | map_breakpoint_numbers |
14452 | (num.c_str (), [&] (breakpoint *b) | |
14453 | { | |
14454 | iterate_over_related_breakpoints (b, disable_breakpoint); | |
14455 | }); | |
9eaabc75 | 14456 | num = extract_arg (&args); |
d248b706 | 14457 | } |
0d381245 | 14458 | } |
c906108c SS |
14459 | } |
14460 | ||
14461 | static void | |
816338b5 SS |
14462 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14463 | int count) | |
c906108c | 14464 | { |
afe38095 | 14465 | int target_resources_ok; |
c906108c SS |
14466 | |
14467 | if (bpt->type == bp_hardware_breakpoint) | |
14468 | { | |
14469 | int i; | |
c5aa993b | 14470 | i = hw_breakpoint_used_count (); |
53a5351d | 14471 | target_resources_ok = |
d92524f1 | 14472 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14473 | i + 1, 0); |
c906108c | 14474 | if (target_resources_ok == 0) |
8a3fe4f8 | 14475 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14476 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14477 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14478 | } |
14479 | ||
cc60f2e3 | 14480 | if (is_watchpoint (bpt)) |
c906108c | 14481 | { |
d07205c2 | 14482 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 14483 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 14484 | |
492d29ea | 14485 | TRY |
c906108c | 14486 | { |
3a5c3e22 PA |
14487 | struct watchpoint *w = (struct watchpoint *) bpt; |
14488 | ||
1e718ff1 TJB |
14489 | orig_enable_state = bpt->enable_state; |
14490 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14491 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14492 | } |
492d29ea | 14493 | CATCH (e, RETURN_MASK_ALL) |
c5aa993b | 14494 | { |
1e718ff1 | 14495 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14496 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14497 | bpt->number); | |
14498 | return; | |
c5aa993b | 14499 | } |
492d29ea | 14500 | END_CATCH |
c906108c | 14501 | } |
0101ce28 | 14502 | |
b775012e LM |
14503 | bpt->enable_state = bp_enabled; |
14504 | ||
14505 | /* Mark breakpoint locations modified. */ | |
14506 | mark_breakpoint_modified (bpt); | |
14507 | ||
d248b706 KY |
14508 | if (target_supports_enable_disable_tracepoint () |
14509 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14510 | { | |
14511 | struct bp_location *location; | |
14512 | ||
14513 | for (location = bpt->loc; location; location = location->next) | |
14514 | target_enable_tracepoint (location); | |
14515 | } | |
14516 | ||
b4c291bb | 14517 | bpt->disposition = disposition; |
816338b5 | 14518 | bpt->enable_count = count; |
44702360 | 14519 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14520 | |
8d3788bd | 14521 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14522 | } |
14523 | ||
fe3f5fa8 | 14524 | |
c906108c | 14525 | void |
fba45db2 | 14526 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14527 | { |
816338b5 | 14528 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14529 | } |
14530 | ||
c906108c SS |
14531 | /* The enable command enables the specified breakpoints (or all defined |
14532 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 14533 | in stopping the inferior. */ |
c906108c | 14534 | |
c906108c | 14535 | static void |
fba45db2 | 14536 | enable_command (char *args, int from_tty) |
c906108c | 14537 | { |
c906108c | 14538 | if (args == 0) |
46c6471b PA |
14539 | { |
14540 | struct breakpoint *bpt; | |
14541 | ||
14542 | ALL_BREAKPOINTS (bpt) | |
14543 | if (user_breakpoint_p (bpt)) | |
14544 | enable_breakpoint (bpt); | |
14545 | } | |
9eaabc75 | 14546 | else |
0d381245 | 14547 | { |
cb791d59 | 14548 | std::string num = extract_arg (&args); |
9eaabc75 | 14549 | |
cb791d59 | 14550 | while (!num.empty ()) |
d248b706 | 14551 | { |
cb791d59 | 14552 | if (num.find ('.') != std::string::npos) |
b775012e | 14553 | { |
cb791d59 | 14554 | struct bp_location *loc = find_location_by_number (num.c_str ()); |
9eaabc75 MW |
14555 | |
14556 | if (loc) | |
14557 | { | |
14558 | if (!loc->enabled) | |
14559 | { | |
14560 | loc->enabled = 1; | |
14561 | mark_breakpoint_location_modified (loc); | |
14562 | } | |
14563 | if (target_supports_enable_disable_tracepoint () | |
14564 | && current_trace_status ()->running && loc->owner | |
14565 | && is_tracepoint (loc->owner)) | |
14566 | target_enable_tracepoint (loc); | |
14567 | } | |
44702360 | 14568 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 14569 | } |
9eaabc75 | 14570 | else |
48649e1b TT |
14571 | map_breakpoint_numbers |
14572 | (num.c_str (), [&] (breakpoint *b) | |
14573 | { | |
14574 | iterate_over_related_breakpoints (b, enable_breakpoint); | |
14575 | }); | |
9eaabc75 | 14576 | num = extract_arg (&args); |
d248b706 | 14577 | } |
0d381245 | 14578 | } |
c906108c SS |
14579 | } |
14580 | ||
c906108c | 14581 | static void |
4495129a | 14582 | enable_once_command (const char *args, int from_tty) |
c906108c | 14583 | { |
48649e1b TT |
14584 | map_breakpoint_numbers |
14585 | (args, [&] (breakpoint *b) | |
14586 | { | |
14587 | iterate_over_related_breakpoints | |
14588 | (b, [&] (breakpoint *bpt) | |
14589 | { | |
14590 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
14591 | }); | |
14592 | }); | |
816338b5 SS |
14593 | } |
14594 | ||
14595 | static void | |
4495129a | 14596 | enable_count_command (const char *args, int from_tty) |
816338b5 | 14597 | { |
b9d61307 SM |
14598 | int count; |
14599 | ||
14600 | if (args == NULL) | |
14601 | error_no_arg (_("hit count")); | |
14602 | ||
14603 | count = get_number (&args); | |
816338b5 | 14604 | |
48649e1b TT |
14605 | map_breakpoint_numbers |
14606 | (args, [&] (breakpoint *b) | |
14607 | { | |
14608 | iterate_over_related_breakpoints | |
14609 | (b, [&] (breakpoint *bpt) | |
14610 | { | |
14611 | enable_breakpoint_disp (bpt, disp_disable, count); | |
14612 | }); | |
14613 | }); | |
c906108c SS |
14614 | } |
14615 | ||
c906108c | 14616 | static void |
4495129a | 14617 | enable_delete_command (const char *args, int from_tty) |
c906108c | 14618 | { |
48649e1b TT |
14619 | map_breakpoint_numbers |
14620 | (args, [&] (breakpoint *b) | |
14621 | { | |
14622 | iterate_over_related_breakpoints | |
14623 | (b, [&] (breakpoint *bpt) | |
14624 | { | |
14625 | enable_breakpoint_disp (bpt, disp_del, 1); | |
14626 | }); | |
14627 | }); | |
c906108c SS |
14628 | } |
14629 | \f | |
fa8d40ab JJ |
14630 | static void |
14631 | set_breakpoint_cmd (char *args, int from_tty) | |
14632 | { | |
14633 | } | |
14634 | ||
14635 | static void | |
14636 | show_breakpoint_cmd (char *args, int from_tty) | |
14637 | { | |
14638 | } | |
14639 | ||
1f3b5d1b PP |
14640 | /* Invalidate last known value of any hardware watchpoint if |
14641 | the memory which that value represents has been written to by | |
14642 | GDB itself. */ | |
14643 | ||
14644 | static void | |
8de0566d YQ |
14645 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14646 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14647 | const bfd_byte *data) |
14648 | { | |
14649 | struct breakpoint *bp; | |
14650 | ||
14651 | ALL_BREAKPOINTS (bp) | |
14652 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14653 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14654 | { |
3a5c3e22 | 14655 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14656 | |
3a5c3e22 PA |
14657 | if (wp->val_valid && wp->val) |
14658 | { | |
14659 | struct bp_location *loc; | |
14660 | ||
14661 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14662 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14663 | && loc->address + loc->length > addr | |
14664 | && addr + len > loc->address) | |
14665 | { | |
14666 | value_free (wp->val); | |
14667 | wp->val = NULL; | |
14668 | wp->val_valid = 0; | |
14669 | } | |
14670 | } | |
1f3b5d1b PP |
14671 | } |
14672 | } | |
14673 | ||
8181d85f DJ |
14674 | /* Create and insert a breakpoint for software single step. */ |
14675 | ||
14676 | void | |
6c95b8df | 14677 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
4a64f543 MS |
14678 | struct address_space *aspace, |
14679 | CORE_ADDR next_pc) | |
8181d85f | 14680 | { |
7c16b83e PA |
14681 | struct thread_info *tp = inferior_thread (); |
14682 | struct symtab_and_line sal; | |
14683 | CORE_ADDR pc = next_pc; | |
8181d85f | 14684 | |
34b7e8a6 PA |
14685 | if (tp->control.single_step_breakpoints == NULL) |
14686 | { | |
14687 | tp->control.single_step_breakpoints | |
5d5658a1 | 14688 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 14689 | } |
8181d85f | 14690 | |
7c16b83e PA |
14691 | sal = find_pc_line (pc, 0); |
14692 | sal.pc = pc; | |
14693 | sal.section = find_pc_overlay (pc); | |
14694 | sal.explicit_pc = 1; | |
34b7e8a6 | 14695 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 14696 | |
7c16b83e | 14697 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
14698 | } |
14699 | ||
93f9a11f YQ |
14700 | /* Insert single step breakpoints according to the current state. */ |
14701 | ||
14702 | int | |
14703 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
14704 | { | |
f5ea389a | 14705 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 14706 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 14707 | |
f5ea389a | 14708 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 14709 | |
a0ff9e1a | 14710 | if (!next_pcs.empty ()) |
93f9a11f | 14711 | { |
f5ea389a | 14712 | struct frame_info *frame = get_current_frame (); |
93f9a11f YQ |
14713 | struct address_space *aspace = get_frame_address_space (frame); |
14714 | ||
a0ff9e1a | 14715 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
14716 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
14717 | ||
93f9a11f YQ |
14718 | return 1; |
14719 | } | |
14720 | else | |
14721 | return 0; | |
14722 | } | |
14723 | ||
34b7e8a6 | 14724 | /* See breakpoint.h. */ |
f02253f1 HZ |
14725 | |
14726 | int | |
7c16b83e PA |
14727 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
14728 | struct address_space *aspace, | |
14729 | CORE_ADDR pc) | |
1aafd4da | 14730 | { |
7c16b83e | 14731 | struct bp_location *loc; |
1aafd4da | 14732 | |
7c16b83e PA |
14733 | for (loc = bp->loc; loc != NULL; loc = loc->next) |
14734 | if (loc->inserted | |
14735 | && breakpoint_location_address_match (loc, aspace, pc)) | |
14736 | return 1; | |
1aafd4da | 14737 | |
7c16b83e | 14738 | return 0; |
ef370185 JB |
14739 | } |
14740 | ||
14741 | /* Check whether a software single-step breakpoint is inserted at | |
14742 | PC. */ | |
14743 | ||
14744 | int | |
14745 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, | |
14746 | CORE_ADDR pc) | |
14747 | { | |
34b7e8a6 PA |
14748 | struct breakpoint *bpt; |
14749 | ||
14750 | ALL_BREAKPOINTS (bpt) | |
14751 | { | |
14752 | if (bpt->type == bp_single_step | |
14753 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
14754 | return 1; | |
14755 | } | |
14756 | return 0; | |
1aafd4da UW |
14757 | } |
14758 | ||
1042e4c0 SS |
14759 | /* Tracepoint-specific operations. */ |
14760 | ||
14761 | /* Set tracepoint count to NUM. */ | |
14762 | static void | |
14763 | set_tracepoint_count (int num) | |
14764 | { | |
14765 | tracepoint_count = num; | |
4fa62494 | 14766 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14767 | } |
14768 | ||
70221824 | 14769 | static void |
f2fc3015 | 14770 | trace_command (char *arg_in, int from_tty) |
1042e4c0 | 14771 | { |
f2fc3015 | 14772 | const char *arg = arg_in; |
55aa24fb | 14773 | struct breakpoint_ops *ops; |
55aa24fb | 14774 | |
ffc2605c TT |
14775 | event_location_up location = string_to_event_location (&arg, |
14776 | current_language); | |
5b56227b | 14777 | if (location != NULL |
ffc2605c | 14778 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
14779 | ops = &tracepoint_probe_breakpoint_ops; |
14780 | else | |
14781 | ops = &tracepoint_breakpoint_ops; | |
14782 | ||
558a9d82 | 14783 | create_breakpoint (get_current_arch (), |
ffc2605c | 14784 | location.get (), |
f00aae0f | 14785 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14786 | 0 /* tempflag */, |
14787 | bp_tracepoint /* type_wanted */, | |
14788 | 0 /* Ignore count */, | |
14789 | pending_break_support, | |
14790 | ops, | |
14791 | from_tty, | |
14792 | 1 /* enabled */, | |
14793 | 0 /* internal */, 0); | |
1042e4c0 SS |
14794 | } |
14795 | ||
70221824 | 14796 | static void |
f2fc3015 | 14797 | ftrace_command (char *arg_in, int from_tty) |
7a697b8d | 14798 | { |
f2fc3015 | 14799 | const char *arg = arg_in; |
ffc2605c TT |
14800 | event_location_up location = string_to_event_location (&arg, |
14801 | current_language); | |
558a9d82 | 14802 | create_breakpoint (get_current_arch (), |
ffc2605c | 14803 | location.get (), |
f00aae0f | 14804 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14805 | 0 /* tempflag */, |
14806 | bp_fast_tracepoint /* type_wanted */, | |
14807 | 0 /* Ignore count */, | |
14808 | pending_break_support, | |
14809 | &tracepoint_breakpoint_ops, | |
14810 | from_tty, | |
14811 | 1 /* enabled */, | |
14812 | 0 /* internal */, 0); | |
0fb4aa4b PA |
14813 | } |
14814 | ||
14815 | /* strace command implementation. Creates a static tracepoint. */ | |
14816 | ||
70221824 | 14817 | static void |
f2fc3015 | 14818 | strace_command (char *arg_in, int from_tty) |
0fb4aa4b | 14819 | { |
f2fc3015 | 14820 | const char *arg = arg_in; |
983af33b | 14821 | struct breakpoint_ops *ops; |
ffc2605c | 14822 | event_location_up location; |
f00aae0f | 14823 | struct cleanup *back_to; |
983af33b SDJ |
14824 | |
14825 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
14826 | or with a normal static tracepoint. */ | |
61012eef | 14827 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
14828 | { |
14829 | ops = &strace_marker_breakpoint_ops; | |
14830 | location = new_linespec_location (&arg); | |
14831 | } | |
983af33b | 14832 | else |
f00aae0f KS |
14833 | { |
14834 | ops = &tracepoint_breakpoint_ops; | |
14835 | location = string_to_event_location (&arg, current_language); | |
14836 | } | |
983af33b | 14837 | |
558a9d82 | 14838 | create_breakpoint (get_current_arch (), |
ffc2605c | 14839 | location.get (), |
f00aae0f | 14840 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14841 | 0 /* tempflag */, |
14842 | bp_static_tracepoint /* type_wanted */, | |
14843 | 0 /* Ignore count */, | |
14844 | pending_break_support, | |
14845 | ops, | |
14846 | from_tty, | |
14847 | 1 /* enabled */, | |
14848 | 0 /* internal */, 0); | |
7a697b8d SS |
14849 | } |
14850 | ||
409873ef SS |
14851 | /* Set up a fake reader function that gets command lines from a linked |
14852 | list that was acquired during tracepoint uploading. */ | |
14853 | ||
14854 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 14855 | static int next_cmd; |
409873ef SS |
14856 | |
14857 | static char * | |
14858 | read_uploaded_action (void) | |
14859 | { | |
14860 | char *rslt; | |
14861 | ||
3149d8c1 | 14862 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 14863 | |
3149d8c1 | 14864 | next_cmd++; |
409873ef SS |
14865 | |
14866 | return rslt; | |
14867 | } | |
14868 | ||
00bf0b85 SS |
14869 | /* Given information about a tracepoint as recorded on a target (which |
14870 | can be either a live system or a trace file), attempt to create an | |
14871 | equivalent GDB tracepoint. This is not a reliable process, since | |
14872 | the target does not necessarily have all the information used when | |
14873 | the tracepoint was originally defined. */ | |
14874 | ||
d9b3f62e | 14875 | struct tracepoint * |
00bf0b85 | 14876 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 14877 | { |
f2fc3015 TT |
14878 | const char *addr_str; |
14879 | char small_buf[100]; | |
d9b3f62e | 14880 | struct tracepoint *tp; |
fd9b8c24 | 14881 | |
409873ef SS |
14882 | if (utp->at_string) |
14883 | addr_str = utp->at_string; | |
14884 | else | |
14885 | { | |
14886 | /* In the absence of a source location, fall back to raw | |
14887 | address. Since there is no way to confirm that the address | |
14888 | means the same thing as when the trace was started, warn the | |
14889 | user. */ | |
3e43a32a MS |
14890 | warning (_("Uploaded tracepoint %d has no " |
14891 | "source location, using raw address"), | |
409873ef | 14892 | utp->number); |
8c042590 | 14893 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
14894 | addr_str = small_buf; |
14895 | } | |
14896 | ||
14897 | /* There's not much we can do with a sequence of bytecodes. */ | |
14898 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
14899 | warning (_("Uploaded tracepoint %d condition " |
14900 | "has no source form, ignoring it"), | |
409873ef | 14901 | utp->number); |
d5551862 | 14902 | |
ffc2605c TT |
14903 | event_location_up location = string_to_event_location (&addr_str, |
14904 | current_language); | |
8cdf0e15 | 14905 | if (!create_breakpoint (get_current_arch (), |
ffc2605c | 14906 | location.get (), |
f00aae0f | 14907 | utp->cond_string, -1, addr_str, |
e7e0cddf | 14908 | 0 /* parse cond/thread */, |
8cdf0e15 | 14909 | 0 /* tempflag */, |
0fb4aa4b | 14910 | utp->type /* type_wanted */, |
8cdf0e15 VP |
14911 | 0 /* Ignore count */, |
14912 | pending_break_support, | |
348d480f | 14913 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 14914 | 0 /* from_tty */, |
84f4c1fe | 14915 | utp->enabled /* enabled */, |
44f238bb PA |
14916 | 0 /* internal */, |
14917 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 14918 | return NULL; |
fd9b8c24 | 14919 | |
409873ef | 14920 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
14921 | tp = get_tracepoint (tracepoint_count); |
14922 | gdb_assert (tp != NULL); | |
d5551862 | 14923 | |
00bf0b85 SS |
14924 | if (utp->pass > 0) |
14925 | { | |
8c042590 | 14926 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 14927 | tp->number); |
00bf0b85 | 14928 | |
409873ef | 14929 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
14930 | } |
14931 | ||
409873ef SS |
14932 | /* If we have uploaded versions of the original commands, set up a |
14933 | special-purpose "reader" function and call the usual command line | |
14934 | reader, then pass the result to the breakpoint command-setting | |
14935 | function. */ | |
3149d8c1 | 14936 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 14937 | { |
93921405 | 14938 | command_line_up cmd_list; |
00bf0b85 | 14939 | |
409873ef | 14940 | this_utp = utp; |
3149d8c1 | 14941 | next_cmd = 0; |
d5551862 | 14942 | |
409873ef SS |
14943 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
14944 | ||
c1fc2657 | 14945 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 14946 | } |
3149d8c1 SS |
14947 | else if (!VEC_empty (char_ptr, utp->actions) |
14948 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
14949 | warning (_("Uploaded tracepoint %d actions " |
14950 | "have no source form, ignoring them"), | |
409873ef | 14951 | utp->number); |
00bf0b85 | 14952 | |
f196051f | 14953 | /* Copy any status information that might be available. */ |
c1fc2657 | 14954 | tp->hit_count = utp->hit_count; |
f196051f SS |
14955 | tp->traceframe_usage = utp->traceframe_usage; |
14956 | ||
00bf0b85 | 14957 | return tp; |
d9b3f62e | 14958 | } |
00bf0b85 | 14959 | |
1042e4c0 SS |
14960 | /* Print information on tracepoint number TPNUM_EXP, or all if |
14961 | omitted. */ | |
14962 | ||
14963 | static void | |
11db9430 | 14964 | info_tracepoints_command (char *args, int from_tty) |
1042e4c0 | 14965 | { |
79a45e25 | 14966 | struct ui_out *uiout = current_uiout; |
e5a67952 | 14967 | int num_printed; |
1042e4c0 | 14968 | |
e5a67952 | 14969 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
14970 | |
14971 | if (num_printed == 0) | |
1042e4c0 | 14972 | { |
e5a67952 | 14973 | if (args == NULL || *args == '\0') |
112e8700 | 14974 | uiout->message ("No tracepoints.\n"); |
d77f58be | 14975 | else |
112e8700 | 14976 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 14977 | } |
ad443146 SS |
14978 | |
14979 | default_collect_info (); | |
1042e4c0 SS |
14980 | } |
14981 | ||
4a64f543 | 14982 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
14983 | Not supported by all targets. */ |
14984 | static void | |
14985 | enable_trace_command (char *args, int from_tty) | |
14986 | { | |
14987 | enable_command (args, from_tty); | |
14988 | } | |
14989 | ||
4a64f543 | 14990 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
14991 | Not supported by all targets. */ |
14992 | static void | |
14993 | disable_trace_command (char *args, int from_tty) | |
14994 | { | |
14995 | disable_command (args, from_tty); | |
14996 | } | |
14997 | ||
4a64f543 | 14998 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 14999 | static void |
4495129a | 15000 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 15001 | { |
35df4500 | 15002 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
15003 | |
15004 | dont_repeat (); | |
15005 | ||
15006 | if (arg == 0) | |
15007 | { | |
15008 | int breaks_to_delete = 0; | |
15009 | ||
15010 | /* Delete all breakpoints if no argument. | |
15011 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
15012 | have to be deleted with an explicit breakpoint number |
15013 | argument. */ | |
1042e4c0 | 15014 | ALL_TRACEPOINTS (b) |
46c6471b | 15015 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
15016 | { |
15017 | breaks_to_delete = 1; | |
15018 | break; | |
15019 | } | |
1042e4c0 SS |
15020 | |
15021 | /* Ask user only if there are some breakpoints to delete. */ | |
15022 | if (!from_tty | |
15023 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
15024 | { | |
35df4500 | 15025 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 15026 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 15027 | delete_breakpoint (b); |
1042e4c0 SS |
15028 | } |
15029 | } | |
15030 | else | |
48649e1b TT |
15031 | map_breakpoint_numbers |
15032 | (arg, [&] (breakpoint *b) | |
15033 | { | |
15034 | iterate_over_related_breakpoints (b, delete_breakpoint); | |
15035 | }); | |
1042e4c0 SS |
15036 | } |
15037 | ||
197f0a60 TT |
15038 | /* Helper function for trace_pass_command. */ |
15039 | ||
15040 | static void | |
d9b3f62e | 15041 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 15042 | { |
d9b3f62e | 15043 | tp->pass_count = count; |
c1fc2657 | 15044 | observer_notify_breakpoint_modified (tp); |
197f0a60 TT |
15045 | if (from_tty) |
15046 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
c1fc2657 | 15047 | tp->number, count); |
197f0a60 TT |
15048 | } |
15049 | ||
1042e4c0 SS |
15050 | /* Set passcount for tracepoint. |
15051 | ||
15052 | First command argument is passcount, second is tracepoint number. | |
15053 | If tracepoint number omitted, apply to most recently defined. | |
15054 | Also accepts special argument "all". */ | |
15055 | ||
15056 | static void | |
15057 | trace_pass_command (char *args, int from_tty) | |
15058 | { | |
d9b3f62e | 15059 | struct tracepoint *t1; |
1042e4c0 | 15060 | unsigned int count; |
1042e4c0 SS |
15061 | |
15062 | if (args == 0 || *args == 0) | |
3e43a32a MS |
15063 | error (_("passcount command requires an " |
15064 | "argument (count + optional TP num)")); | |
1042e4c0 | 15065 | |
4a64f543 | 15066 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 15067 | |
529480d0 | 15068 | args = skip_spaces (args); |
1042e4c0 SS |
15069 | if (*args && strncasecmp (args, "all", 3) == 0) |
15070 | { | |
d9b3f62e PA |
15071 | struct breakpoint *b; |
15072 | ||
1042e4c0 | 15073 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
15074 | if (*args) |
15075 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 15076 | |
d9b3f62e | 15077 | ALL_TRACEPOINTS (b) |
197f0a60 | 15078 | { |
d9b3f62e | 15079 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
15080 | trace_pass_set_count (t1, count, from_tty); |
15081 | } | |
15082 | } | |
15083 | else if (*args == '\0') | |
1042e4c0 | 15084 | { |
5fa1d40e | 15085 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 15086 | if (t1) |
197f0a60 TT |
15087 | trace_pass_set_count (t1, count, from_tty); |
15088 | } | |
15089 | else | |
15090 | { | |
bfd28288 PA |
15091 | number_or_range_parser parser (args); |
15092 | while (!parser.finished ()) | |
1042e4c0 | 15093 | { |
bfd28288 | 15094 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
15095 | if (t1) |
15096 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
15097 | } |
15098 | } | |
1042e4c0 SS |
15099 | } |
15100 | ||
d9b3f62e | 15101 | struct tracepoint * |
1042e4c0 SS |
15102 | get_tracepoint (int num) |
15103 | { | |
15104 | struct breakpoint *t; | |
15105 | ||
15106 | ALL_TRACEPOINTS (t) | |
15107 | if (t->number == num) | |
d9b3f62e | 15108 | return (struct tracepoint *) t; |
1042e4c0 SS |
15109 | |
15110 | return NULL; | |
15111 | } | |
15112 | ||
d5551862 SS |
15113 | /* Find the tracepoint with the given target-side number (which may be |
15114 | different from the tracepoint number after disconnecting and | |
15115 | reconnecting). */ | |
15116 | ||
d9b3f62e | 15117 | struct tracepoint * |
d5551862 SS |
15118 | get_tracepoint_by_number_on_target (int num) |
15119 | { | |
d9b3f62e | 15120 | struct breakpoint *b; |
d5551862 | 15121 | |
d9b3f62e PA |
15122 | ALL_TRACEPOINTS (b) |
15123 | { | |
15124 | struct tracepoint *t = (struct tracepoint *) b; | |
15125 | ||
15126 | if (t->number_on_target == num) | |
15127 | return t; | |
15128 | } | |
d5551862 SS |
15129 | |
15130 | return NULL; | |
15131 | } | |
15132 | ||
1042e4c0 | 15133 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 15134 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
15135 | If the argument is missing, the most recent tracepoint |
15136 | (tracepoint_count) is returned. */ | |
15137 | ||
d9b3f62e | 15138 | struct tracepoint * |
197f0a60 | 15139 | get_tracepoint_by_number (char **arg, |
bfd28288 | 15140 | number_or_range_parser *parser) |
1042e4c0 | 15141 | { |
1042e4c0 SS |
15142 | struct breakpoint *t; |
15143 | int tpnum; | |
15144 | char *instring = arg == NULL ? NULL : *arg; | |
15145 | ||
bfd28288 | 15146 | if (parser != NULL) |
197f0a60 | 15147 | { |
bfd28288 PA |
15148 | gdb_assert (!parser->finished ()); |
15149 | tpnum = parser->get_number (); | |
197f0a60 TT |
15150 | } |
15151 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 15152 | tpnum = tracepoint_count; |
1042e4c0 | 15153 | else |
197f0a60 | 15154 | tpnum = get_number (arg); |
1042e4c0 SS |
15155 | |
15156 | if (tpnum <= 0) | |
15157 | { | |
15158 | if (instring && *instring) | |
15159 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
15160 | instring); | |
15161 | else | |
5fa1d40e | 15162 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
15163 | return NULL; |
15164 | } | |
15165 | ||
15166 | ALL_TRACEPOINTS (t) | |
15167 | if (t->number == tpnum) | |
15168 | { | |
d9b3f62e | 15169 | return (struct tracepoint *) t; |
1042e4c0 SS |
15170 | } |
15171 | ||
1042e4c0 SS |
15172 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
15173 | return NULL; | |
15174 | } | |
15175 | ||
d9b3f62e PA |
15176 | void |
15177 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
15178 | { | |
15179 | if (b->thread != -1) | |
15180 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
15181 | ||
15182 | if (b->task != 0) | |
15183 | fprintf_unfiltered (fp, " task %d", b->task); | |
15184 | ||
15185 | fprintf_unfiltered (fp, "\n"); | |
15186 | } | |
15187 | ||
6149aea9 PA |
15188 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15189 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15190 | on each breakpoint and only include the ones for which it returns | |
15191 | non-zero. */ | |
15192 | ||
1042e4c0 | 15193 | static void |
4495129a | 15194 | save_breakpoints (const char *filename, int from_tty, |
6149aea9 | 15195 | int (*filter) (const struct breakpoint *)) |
1042e4c0 SS |
15196 | { |
15197 | struct breakpoint *tp; | |
6149aea9 | 15198 | int any = 0; |
6149aea9 | 15199 | int extra_trace_bits = 0; |
1042e4c0 | 15200 | |
6149aea9 PA |
15201 | if (filename == 0 || *filename == 0) |
15202 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15203 | |
15204 | /* See if we have anything to save. */ | |
6149aea9 | 15205 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15206 | { |
6149aea9 | 15207 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15208 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
15209 | continue; |
15210 | ||
15211 | /* If we have a filter, only save the breakpoints it accepts. */ | |
15212 | if (filter && !filter (tp)) | |
15213 | continue; | |
15214 | ||
15215 | any = 1; | |
15216 | ||
15217 | if (is_tracepoint (tp)) | |
15218 | { | |
15219 | extra_trace_bits = 1; | |
15220 | ||
15221 | /* We can stop searching. */ | |
15222 | break; | |
15223 | } | |
1042e4c0 | 15224 | } |
6149aea9 PA |
15225 | |
15226 | if (!any) | |
1042e4c0 | 15227 | { |
6149aea9 | 15228 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15229 | return; |
15230 | } | |
15231 | ||
ee0c3293 | 15232 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
15233 | |
15234 | stdio_file fp; | |
15235 | ||
ee0c3293 | 15236 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 15237 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 15238 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 15239 | |
6149aea9 | 15240 | if (extra_trace_bits) |
d7e74731 | 15241 | save_trace_state_variables (&fp); |
8bf6485c | 15242 | |
6149aea9 | 15243 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15244 | { |
6149aea9 | 15245 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15246 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15247 | continue; |
8bf6485c | 15248 | |
6149aea9 PA |
15249 | /* If we have a filter, only save the breakpoints it accepts. */ |
15250 | if (filter && !filter (tp)) | |
15251 | continue; | |
15252 | ||
d7e74731 | 15253 | tp->ops->print_recreate (tp, &fp); |
1042e4c0 | 15254 | |
6149aea9 PA |
15255 | /* Note, we can't rely on tp->number for anything, as we can't |
15256 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15257 | instead. */ | |
15258 | ||
15259 | if (tp->cond_string) | |
d7e74731 | 15260 | fp.printf (" condition $bpnum %s\n", tp->cond_string); |
6149aea9 PA |
15261 | |
15262 | if (tp->ignore_count) | |
d7e74731 | 15263 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); |
6149aea9 | 15264 | |
2d9442cc | 15265 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 15266 | { |
d7e74731 | 15267 | fp.puts (" commands\n"); |
a7bdde9e | 15268 | |
d7e74731 | 15269 | current_uiout->redirect (&fp); |
492d29ea | 15270 | TRY |
1042e4c0 | 15271 | { |
d1b0a7bf | 15272 | print_command_lines (current_uiout, tp->commands.get (), 2); |
a7bdde9e | 15273 | } |
492d29ea PA |
15274 | CATCH (ex, RETURN_MASK_ALL) |
15275 | { | |
112e8700 | 15276 | current_uiout->redirect (NULL); |
492d29ea PA |
15277 | throw_exception (ex); |
15278 | } | |
15279 | END_CATCH | |
1042e4c0 | 15280 | |
112e8700 | 15281 | current_uiout->redirect (NULL); |
d7e74731 | 15282 | fp.puts (" end\n"); |
1042e4c0 | 15283 | } |
6149aea9 PA |
15284 | |
15285 | if (tp->enable_state == bp_disabled) | |
d7e74731 | 15286 | fp.puts ("disable $bpnum\n"); |
6149aea9 PA |
15287 | |
15288 | /* If this is a multi-location breakpoint, check if the locations | |
15289 | should be individually disabled. Watchpoint locations are | |
15290 | special, and not user visible. */ | |
15291 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15292 | { | |
15293 | struct bp_location *loc; | |
15294 | int n = 1; | |
15295 | ||
15296 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15297 | if (!loc->enabled) | |
d7e74731 | 15298 | fp.printf ("disable $bpnum.%d\n", n); |
6149aea9 | 15299 | } |
1042e4c0 | 15300 | } |
8bf6485c | 15301 | |
6149aea9 | 15302 | if (extra_trace_bits && *default_collect) |
d7e74731 | 15303 | fp.printf ("set default-collect %s\n", default_collect); |
8bf6485c | 15304 | |
1042e4c0 | 15305 | if (from_tty) |
ee0c3293 | 15306 | printf_filtered (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
15307 | } |
15308 | ||
15309 | /* The `save breakpoints' command. */ | |
15310 | ||
15311 | static void | |
4495129a | 15312 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
15313 | { |
15314 | save_breakpoints (args, from_tty, NULL); | |
15315 | } | |
15316 | ||
15317 | /* The `save tracepoints' command. */ | |
15318 | ||
15319 | static void | |
4495129a | 15320 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
15321 | { |
15322 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15323 | } |
15324 | ||
15325 | /* Create a vector of all tracepoints. */ | |
15326 | ||
15327 | VEC(breakpoint_p) * | |
eeae04df | 15328 | all_tracepoints (void) |
1042e4c0 SS |
15329 | { |
15330 | VEC(breakpoint_p) *tp_vec = 0; | |
15331 | struct breakpoint *tp; | |
15332 | ||
15333 | ALL_TRACEPOINTS (tp) | |
15334 | { | |
15335 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
15336 | } | |
15337 | ||
15338 | return tp_vec; | |
15339 | } | |
15340 | ||
c906108c | 15341 | \f |
629500fa KS |
15342 | /* This help string is used to consolidate all the help string for specifying |
15343 | locations used by several commands. */ | |
15344 | ||
15345 | #define LOCATION_HELP_STRING \ | |
15346 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
15347 | source filename, function name, label name, and line number.\n\ | |
15348 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
15349 | function \"fact\" in the file \"factorial.c\", use\n\ | |
15350 | \"factorial.c:fact:the_top\".\n\ | |
15351 | \n\ | |
15352 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
15353 | program. Example: To specify the fourth byte past the start function\n\ | |
15354 | \"main\", use \"*main + 4\".\n\ | |
15355 | \n\ | |
15356 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
15357 | syntax to specify location parameters.\n\ | |
15358 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
15359 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
15360 | -function fact -label the_top\".\n" | |
15361 | ||
4a64f543 MS |
15362 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15363 | commands. It is defined as a macro to prevent duplication. | |
15364 | COMMAND should be a string constant containing the name of the | |
15365 | command. */ | |
629500fa | 15366 | |
31e2b00f | 15367 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15368 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15369 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15370 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15371 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15372 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
15373 | LOCATION may be a linespec, address, or explicit location as described\n\ |
15374 | below.\n\ | |
15375 | \n\ | |
dc10affe PA |
15376 | With no LOCATION, uses current execution address of the selected\n\ |
15377 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15378 | \n\ |
15379 | THREADNUM is the number from \"info threads\".\n\ | |
15380 | CONDITION is a boolean expression.\n\ | |
629500fa | 15381 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
15382 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15383 | conditions are different.\n\ | |
31e2b00f AS |
15384 | \n\ |
15385 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15386 | ||
44feb3ce TT |
15387 | /* List of subcommands for "catch". */ |
15388 | static struct cmd_list_element *catch_cmdlist; | |
15389 | ||
15390 | /* List of subcommands for "tcatch". */ | |
15391 | static struct cmd_list_element *tcatch_cmdlist; | |
15392 | ||
9ac4176b | 15393 | void |
a121b7c1 | 15394 | add_catch_command (const char *name, const char *docstring, |
82ae6c8d | 15395 | cmd_sfunc_ftype *sfunc, |
625e8578 | 15396 | completer_ftype *completer, |
44feb3ce TT |
15397 | void *user_data_catch, |
15398 | void *user_data_tcatch) | |
15399 | { | |
15400 | struct cmd_list_element *command; | |
15401 | ||
0450cc4c | 15402 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15403 | &catch_cmdlist); |
15404 | set_cmd_sfunc (command, sfunc); | |
15405 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15406 | set_cmd_completer (command, completer); |
44feb3ce | 15407 | |
0450cc4c | 15408 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15409 | &tcatch_cmdlist); |
15410 | set_cmd_sfunc (command, sfunc); | |
15411 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15412 | set_cmd_completer (command, completer); |
44feb3ce TT |
15413 | } |
15414 | ||
6149aea9 PA |
15415 | static void |
15416 | save_command (char *arg, int from_tty) | |
15417 | { | |
3e43a32a MS |
15418 | printf_unfiltered (_("\"save\" must be followed by " |
15419 | "the name of a save subcommand.\n")); | |
635c7e8a | 15420 | help_list (save_cmdlist, "save ", all_commands, gdb_stdout); |
6149aea9 PA |
15421 | } |
15422 | ||
84f4c1fe PM |
15423 | struct breakpoint * |
15424 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15425 | void *data) | |
15426 | { | |
35df4500 | 15427 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15428 | |
35df4500 | 15429 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15430 | { |
15431 | if ((*callback) (b, data)) | |
15432 | return b; | |
15433 | } | |
15434 | ||
15435 | return NULL; | |
15436 | } | |
15437 | ||
0574c78f GB |
15438 | /* Zero if any of the breakpoint's locations could be a location where |
15439 | functions have been inlined, nonzero otherwise. */ | |
15440 | ||
15441 | static int | |
15442 | is_non_inline_function (struct breakpoint *b) | |
15443 | { | |
15444 | /* The shared library event breakpoint is set on the address of a | |
15445 | non-inline function. */ | |
15446 | if (b->type == bp_shlib_event) | |
15447 | return 1; | |
15448 | ||
15449 | return 0; | |
15450 | } | |
15451 | ||
15452 | /* Nonzero if the specified PC cannot be a location where functions | |
15453 | have been inlined. */ | |
15454 | ||
15455 | int | |
09ac7c10 TT |
15456 | pc_at_non_inline_function (struct address_space *aspace, CORE_ADDR pc, |
15457 | const struct target_waitstatus *ws) | |
0574c78f GB |
15458 | { |
15459 | struct breakpoint *b; | |
15460 | struct bp_location *bl; | |
15461 | ||
15462 | ALL_BREAKPOINTS (b) | |
15463 | { | |
15464 | if (!is_non_inline_function (b)) | |
15465 | continue; | |
15466 | ||
15467 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15468 | { | |
15469 | if (!bl->shlib_disabled | |
09ac7c10 | 15470 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15471 | return 1; |
15472 | } | |
15473 | } | |
15474 | ||
15475 | return 0; | |
15476 | } | |
15477 | ||
2f202fde JK |
15478 | /* Remove any references to OBJFILE which is going to be freed. */ |
15479 | ||
15480 | void | |
15481 | breakpoint_free_objfile (struct objfile *objfile) | |
15482 | { | |
15483 | struct bp_location **locp, *loc; | |
15484 | ||
15485 | ALL_BP_LOCATIONS (loc, locp) | |
eb822aa6 | 15486 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15487 | loc->symtab = NULL; |
15488 | } | |
15489 | ||
2060206e PA |
15490 | void |
15491 | initialize_breakpoint_ops (void) | |
15492 | { | |
15493 | static int initialized = 0; | |
15494 | ||
15495 | struct breakpoint_ops *ops; | |
15496 | ||
15497 | if (initialized) | |
15498 | return; | |
15499 | initialized = 1; | |
15500 | ||
15501 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15502 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15503 | internal and momentary breakpoints, etc.). */ | |
15504 | ops = &bkpt_base_breakpoint_ops; | |
15505 | *ops = base_breakpoint_ops; | |
15506 | ops->re_set = bkpt_re_set; | |
15507 | ops->insert_location = bkpt_insert_location; | |
15508 | ops->remove_location = bkpt_remove_location; | |
15509 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
5f700d83 | 15510 | ops->create_sals_from_location = bkpt_create_sals_from_location; |
983af33b | 15511 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; |
5f700d83 | 15512 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
15513 | |
15514 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15515 | ops = &bkpt_breakpoint_ops; | |
15516 | *ops = bkpt_base_breakpoint_ops; | |
15517 | ops->re_set = bkpt_re_set; | |
15518 | ops->resources_needed = bkpt_resources_needed; | |
15519 | ops->print_it = bkpt_print_it; | |
15520 | ops->print_mention = bkpt_print_mention; | |
15521 | ops->print_recreate = bkpt_print_recreate; | |
15522 | ||
15523 | /* Ranged breakpoints. */ | |
15524 | ops = &ranged_breakpoint_ops; | |
15525 | *ops = bkpt_breakpoint_ops; | |
15526 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15527 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15528 | ops->print_it = print_it_ranged_breakpoint; | |
15529 | ops->print_one = print_one_ranged_breakpoint; | |
15530 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15531 | ops->print_mention = print_mention_ranged_breakpoint; | |
15532 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15533 | ||
15534 | /* Internal breakpoints. */ | |
15535 | ops = &internal_breakpoint_ops; | |
15536 | *ops = bkpt_base_breakpoint_ops; | |
15537 | ops->re_set = internal_bkpt_re_set; | |
15538 | ops->check_status = internal_bkpt_check_status; | |
15539 | ops->print_it = internal_bkpt_print_it; | |
15540 | ops->print_mention = internal_bkpt_print_mention; | |
15541 | ||
15542 | /* Momentary breakpoints. */ | |
15543 | ops = &momentary_breakpoint_ops; | |
15544 | *ops = bkpt_base_breakpoint_ops; | |
15545 | ops->re_set = momentary_bkpt_re_set; | |
15546 | ops->check_status = momentary_bkpt_check_status; | |
15547 | ops->print_it = momentary_bkpt_print_it; | |
15548 | ops->print_mention = momentary_bkpt_print_mention; | |
15549 | ||
55aa24fb SDJ |
15550 | /* Probe breakpoints. */ |
15551 | ops = &bkpt_probe_breakpoint_ops; | |
15552 | *ops = bkpt_breakpoint_ops; | |
15553 | ops->insert_location = bkpt_probe_insert_location; | |
15554 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
15555 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
15556 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 15557 | |
2060206e PA |
15558 | /* Watchpoints. */ |
15559 | ops = &watchpoint_breakpoint_ops; | |
15560 | *ops = base_breakpoint_ops; | |
15561 | ops->re_set = re_set_watchpoint; | |
15562 | ops->insert_location = insert_watchpoint; | |
15563 | ops->remove_location = remove_watchpoint; | |
15564 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15565 | ops->check_status = check_status_watchpoint; | |
15566 | ops->resources_needed = resources_needed_watchpoint; | |
15567 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15568 | ops->print_it = print_it_watchpoint; | |
15569 | ops->print_mention = print_mention_watchpoint; | |
15570 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15571 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15572 | |
15573 | /* Masked watchpoints. */ | |
15574 | ops = &masked_watchpoint_breakpoint_ops; | |
15575 | *ops = watchpoint_breakpoint_ops; | |
15576 | ops->insert_location = insert_masked_watchpoint; | |
15577 | ops->remove_location = remove_masked_watchpoint; | |
15578 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15579 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15580 | ops->print_it = print_it_masked_watchpoint; | |
15581 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15582 | ops->print_mention = print_mention_masked_watchpoint; | |
15583 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15584 | ||
15585 | /* Tracepoints. */ | |
15586 | ops = &tracepoint_breakpoint_ops; | |
15587 | *ops = base_breakpoint_ops; | |
15588 | ops->re_set = tracepoint_re_set; | |
15589 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15590 | ops->print_one_detail = tracepoint_print_one_detail; | |
15591 | ops->print_mention = tracepoint_print_mention; | |
15592 | ops->print_recreate = tracepoint_print_recreate; | |
5f700d83 | 15593 | ops->create_sals_from_location = tracepoint_create_sals_from_location; |
983af33b | 15594 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; |
5f700d83 | 15595 | ops->decode_location = tracepoint_decode_location; |
983af33b | 15596 | |
55aa24fb SDJ |
15597 | /* Probe tracepoints. */ |
15598 | ops = &tracepoint_probe_breakpoint_ops; | |
15599 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
15600 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
15601 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 15602 | |
983af33b SDJ |
15603 | /* Static tracepoints with marker (`-m'). */ |
15604 | ops = &strace_marker_breakpoint_ops; | |
15605 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 15606 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 15607 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 15608 | ops->decode_location = strace_marker_decode_location; |
2060206e PA |
15609 | |
15610 | /* Fork catchpoints. */ | |
15611 | ops = &catch_fork_breakpoint_ops; | |
15612 | *ops = base_breakpoint_ops; | |
15613 | ops->insert_location = insert_catch_fork; | |
15614 | ops->remove_location = remove_catch_fork; | |
15615 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15616 | ops->print_it = print_it_catch_fork; | |
15617 | ops->print_one = print_one_catch_fork; | |
15618 | ops->print_mention = print_mention_catch_fork; | |
15619 | ops->print_recreate = print_recreate_catch_fork; | |
15620 | ||
15621 | /* Vfork catchpoints. */ | |
15622 | ops = &catch_vfork_breakpoint_ops; | |
15623 | *ops = base_breakpoint_ops; | |
15624 | ops->insert_location = insert_catch_vfork; | |
15625 | ops->remove_location = remove_catch_vfork; | |
15626 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15627 | ops->print_it = print_it_catch_vfork; | |
15628 | ops->print_one = print_one_catch_vfork; | |
15629 | ops->print_mention = print_mention_catch_vfork; | |
15630 | ops->print_recreate = print_recreate_catch_vfork; | |
15631 | ||
15632 | /* Exec catchpoints. */ | |
15633 | ops = &catch_exec_breakpoint_ops; | |
15634 | *ops = base_breakpoint_ops; | |
2060206e PA |
15635 | ops->insert_location = insert_catch_exec; |
15636 | ops->remove_location = remove_catch_exec; | |
15637 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15638 | ops->print_it = print_it_catch_exec; | |
15639 | ops->print_one = print_one_catch_exec; | |
15640 | ops->print_mention = print_mention_catch_exec; | |
15641 | ops->print_recreate = print_recreate_catch_exec; | |
15642 | ||
edcc5120 TT |
15643 | /* Solib-related catchpoints. */ |
15644 | ops = &catch_solib_breakpoint_ops; | |
15645 | *ops = base_breakpoint_ops; | |
edcc5120 TT |
15646 | ops->insert_location = insert_catch_solib; |
15647 | ops->remove_location = remove_catch_solib; | |
15648 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15649 | ops->check_status = check_status_catch_solib; | |
15650 | ops->print_it = print_it_catch_solib; | |
15651 | ops->print_one = print_one_catch_solib; | |
15652 | ops->print_mention = print_mention_catch_solib; | |
15653 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15654 | |
15655 | ops = &dprintf_breakpoint_ops; | |
15656 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15657 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15658 | ops->resources_needed = bkpt_resources_needed; |
15659 | ops->print_it = bkpt_print_it; | |
15660 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15661 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 15662 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 15663 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
15664 | } |
15665 | ||
8bfd80db YQ |
15666 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15667 | ||
15668 | static struct cmd_list_element *enablebreaklist = NULL; | |
15669 | ||
c906108c | 15670 | void |
fba45db2 | 15671 | _initialize_breakpoint (void) |
c906108c SS |
15672 | { |
15673 | struct cmd_list_element *c; | |
15674 | ||
2060206e PA |
15675 | initialize_breakpoint_ops (); |
15676 | ||
84acb35a | 15677 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
63644780 | 15678 | observer_attach_free_objfile (disable_breakpoints_in_freed_objfile); |
1f3b5d1b | 15679 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 15680 | |
55aa24fb SDJ |
15681 | breakpoint_objfile_key |
15682 | = register_objfile_data_with_cleanup (NULL, free_breakpoint_probes); | |
17450429 | 15683 | |
c906108c SS |
15684 | breakpoint_chain = 0; |
15685 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15686 | before a breakpoint is set. */ | |
15687 | breakpoint_count = 0; | |
15688 | ||
1042e4c0 SS |
15689 | tracepoint_count = 0; |
15690 | ||
1bedd215 AC |
15691 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15692 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15693 | Usage is `ignore N COUNT'.")); | |
c906108c | 15694 | |
1bedd215 | 15695 | add_com ("commands", class_breakpoint, commands_command, _("\ |
18da0c51 MG |
15696 | Set commands to be executed when the given breakpoints are hit.\n\ |
15697 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
15698 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
15699 | (e.g. `5-7').\n\ | |
c906108c SS |
15700 | With no argument, the targeted breakpoint is the last one set.\n\ |
15701 | The commands themselves follow starting on the next line.\n\ | |
15702 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15703 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15704 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15705 | |
d55637df | 15706 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15707 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15708 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15709 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15710 | set_cmd_completer (c, condition_completer); |
c906108c | 15711 | |
1bedd215 | 15712 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15713 | Set a temporary breakpoint.\n\ |
c906108c SS |
15714 | Like \"break\" except the breakpoint is only temporary,\n\ |
15715 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15716 | by using \"enable delete\" on the breakpoint number.\n\ |
15717 | \n" | |
15718 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15719 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15720 | |
1bedd215 | 15721 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15722 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15723 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15724 | some target hardware may not have this support.\n\ |
15725 | \n" | |
15726 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15727 | set_cmd_completer (c, location_completer); |
c906108c | 15728 | |
1bedd215 | 15729 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15730 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15731 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15732 | so it will be deleted when hit.\n\ |
15733 | \n" | |
15734 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15735 | set_cmd_completer (c, location_completer); |
c906108c | 15736 | |
1bedd215 AC |
15737 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
15738 | Enable some breakpoints.\n\ | |
c906108c SS |
15739 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15740 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15741 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15742 | With a subcommand you can enable temporarily."), |
c906108c | 15743 | &enablelist, "enable ", 1, &cmdlist); |
c906108c SS |
15744 | |
15745 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15746 | ||
84951ab5 | 15747 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 15748 | Enable some breakpoints.\n\ |
c906108c SS |
15749 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15750 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15751 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 15752 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15753 | |
1a966eab AC |
15754 | add_cmd ("once", no_class, enable_once_command, _("\ |
15755 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15756 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
15757 | &enablebreaklist); |
15758 | ||
1a966eab AC |
15759 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15760 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15761 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15762 | &enablebreaklist); |
15763 | ||
816338b5 SS |
15764 | add_cmd ("count", no_class, enable_count_command, _("\ |
15765 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15766 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15767 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15768 | &enablebreaklist); | |
15769 | ||
1a966eab AC |
15770 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15771 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15772 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15773 | &enablelist); |
15774 | ||
1a966eab AC |
15775 | add_cmd ("once", no_class, enable_once_command, _("\ |
15776 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15777 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
15778 | &enablelist); |
15779 | ||
15780 | add_cmd ("count", no_class, enable_count_command, _("\ | |
15781 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15782 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15783 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15784 | &enablelist); |
15785 | ||
1bedd215 AC |
15786 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
15787 | Disable some breakpoints.\n\ | |
c906108c SS |
15788 | Arguments are breakpoint numbers with spaces in between.\n\ |
15789 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15790 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
15791 | &disablelist, "disable ", 1, &cmdlist); |
15792 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
15793 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
c906108c | 15794 | |
1a966eab AC |
15795 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
15796 | Disable some breakpoints.\n\ | |
c906108c SS |
15797 | Arguments are breakpoint numbers with spaces in between.\n\ |
15798 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15799 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 15800 | This command may be abbreviated \"disable\"."), |
c906108c SS |
15801 | &disablelist); |
15802 | ||
1bedd215 AC |
15803 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
15804 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15805 | Arguments are breakpoint numbers with spaces in between.\n\ |
15806 | To delete all breakpoints, give no argument.\n\ | |
15807 | \n\ | |
15808 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 15809 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
15810 | &deletelist, "delete ", 1, &cmdlist); |
15811 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 15812 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 15813 | |
1a966eab AC |
15814 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
15815 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15816 | Arguments are breakpoint numbers with spaces in between.\n\ |
15817 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 15818 | This command may be abbreviated \"delete\"."), |
c906108c SS |
15819 | &deletelist); |
15820 | ||
1bedd215 | 15821 | add_com ("clear", class_breakpoint, clear_command, _("\ |
629500fa KS |
15822 | Clear breakpoint at specified location.\n\ |
15823 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
15824 | \n\ |
15825 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa KS |
15826 | is executing in.\n" |
15827 | "\n" LOCATION_HELP_STRING "\n\ | |
1bedd215 | 15828 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 15829 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 15830 | |
1bedd215 | 15831 | c = add_com ("break", class_breakpoint, break_command, _("\ |
629500fa | 15832 | Set breakpoint at specified location.\n" |
31e2b00f | 15833 | BREAK_ARGS_HELP ("break"))); |
5ba2abeb | 15834 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15835 | |
c906108c SS |
15836 | add_com_alias ("b", "break", class_run, 1); |
15837 | add_com_alias ("br", "break", class_run, 1); | |
15838 | add_com_alias ("bre", "break", class_run, 1); | |
15839 | add_com_alias ("brea", "break", class_run, 1); | |
15840 | ||
c906108c SS |
15841 | if (dbx_commands) |
15842 | { | |
1bedd215 AC |
15843 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
15844 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
15845 | &stoplist, "stop ", 1, &cmdlist); |
15846 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 15847 | _("Break in function or address."), &stoplist); |
c5aa993b | 15848 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 15849 | _("Break at a line in the current file."), &stoplist); |
11db9430 | 15850 | add_com ("status", class_info, info_breakpoints_command, _("\ |
1bedd215 | 15851 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
15852 | The \"Type\" column indicates one of:\n\ |
15853 | \tbreakpoint - normal breakpoint\n\ | |
15854 | \twatchpoint - watchpoint\n\ | |
15855 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15856 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15857 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15858 | address and file/line number respectively.\n\ |
15859 | \n\ | |
15860 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15861 | are set to the address of the last breakpoint listed unless the command\n\ |
15862 | is prefixed with \"server \".\n\n\ | |
c906108c | 15863 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15864 | breakpoint set.")); |
c906108c SS |
15865 | } |
15866 | ||
11db9430 | 15867 | add_info ("breakpoints", info_breakpoints_command, _("\ |
e5a67952 | 15868 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
15869 | The \"Type\" column indicates one of:\n\ |
15870 | \tbreakpoint - normal breakpoint\n\ | |
15871 | \twatchpoint - watchpoint\n\ | |
15872 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15873 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15874 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15875 | address and file/line number respectively.\n\ |
15876 | \n\ | |
15877 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15878 | are set to the address of the last breakpoint listed unless the command\n\ |
15879 | is prefixed with \"server \".\n\n\ | |
c906108c | 15880 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15881 | breakpoint set.")); |
c906108c | 15882 | |
6b04bdb7 MS |
15883 | add_info_alias ("b", "breakpoints", 1); |
15884 | ||
1a966eab AC |
15885 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
15886 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15887 | The \"Type\" column indicates one of:\n\ |
15888 | \tbreakpoint - normal breakpoint\n\ | |
15889 | \twatchpoint - watchpoint\n\ | |
15890 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
15891 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
15892 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
15893 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
15894 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
15895 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
15896 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
15897 | address and file/line number respectively.\n\ |
15898 | \n\ | |
15899 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15900 | are set to the address of the last breakpoint listed unless the command\n\ |
15901 | is prefixed with \"server \".\n\n\ | |
c906108c | 15902 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 15903 | breakpoint set."), |
c906108c SS |
15904 | &maintenanceinfolist); |
15905 | ||
44feb3ce TT |
15906 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
15907 | Set catchpoints to catch events."), | |
15908 | &catch_cmdlist, "catch ", | |
15909 | 0/*allow-unknown*/, &cmdlist); | |
15910 | ||
15911 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
15912 | Set temporary catchpoints to catch events."), | |
15913 | &tcatch_cmdlist, "tcatch ", | |
15914 | 0/*allow-unknown*/, &cmdlist); | |
15915 | ||
44feb3ce TT |
15916 | add_catch_command ("fork", _("Catch calls to fork."), |
15917 | catch_fork_command_1, | |
a96d9b2e | 15918 | NULL, |
44feb3ce TT |
15919 | (void *) (uintptr_t) catch_fork_permanent, |
15920 | (void *) (uintptr_t) catch_fork_temporary); | |
15921 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
15922 | catch_fork_command_1, | |
a96d9b2e | 15923 | NULL, |
44feb3ce TT |
15924 | (void *) (uintptr_t) catch_vfork_permanent, |
15925 | (void *) (uintptr_t) catch_vfork_temporary); | |
15926 | add_catch_command ("exec", _("Catch calls to exec."), | |
15927 | catch_exec_command_1, | |
a96d9b2e SDJ |
15928 | NULL, |
15929 | CATCH_PERMANENT, | |
15930 | CATCH_TEMPORARY); | |
edcc5120 TT |
15931 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
15932 | Usage: catch load [REGEX]\n\ | |
15933 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15934 | catch_load_command_1, | |
15935 | NULL, | |
15936 | CATCH_PERMANENT, | |
15937 | CATCH_TEMPORARY); | |
15938 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
15939 | Usage: catch unload [REGEX]\n\ | |
15940 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15941 | catch_unload_command_1, | |
15942 | NULL, | |
15943 | CATCH_PERMANENT, | |
15944 | CATCH_TEMPORARY); | |
c5aa993b | 15945 | |
1bedd215 AC |
15946 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
15947 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15948 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 15949 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15950 | an expression changes.\n\ |
15951 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15952 | the memory to which it refers.")); | |
65d12d83 | 15953 | set_cmd_completer (c, expression_completer); |
c906108c | 15954 | |
1bedd215 AC |
15955 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
15956 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 15957 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 15958 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15959 | an expression is read.\n\ |
15960 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15961 | the memory to which it refers.")); | |
65d12d83 | 15962 | set_cmd_completer (c, expression_completer); |
c906108c | 15963 | |
1bedd215 AC |
15964 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
15965 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15966 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 15967 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15968 | an expression is either read or written.\n\ |
15969 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15970 | the memory to which it refers.")); | |
65d12d83 | 15971 | set_cmd_completer (c, expression_completer); |
c906108c | 15972 | |
11db9430 | 15973 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 15974 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 15975 | |
920d2a44 AC |
15976 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
15977 | respond to changes - contrary to the description. */ | |
85c07804 AC |
15978 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
15979 | &can_use_hw_watchpoints, _("\ | |
15980 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
15981 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
15982 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
15983 | such is available. (However, any hardware watchpoints that were\n\ | |
15984 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
15985 | hardware.)"), |
15986 | NULL, | |
920d2a44 | 15987 | show_can_use_hw_watchpoints, |
85c07804 | 15988 | &setlist, &showlist); |
c906108c SS |
15989 | |
15990 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 15991 | |
1042e4c0 SS |
15992 | /* Tracepoint manipulation commands. */ |
15993 | ||
15994 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 15995 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
15996 | \n" |
15997 | BREAK_ARGS_HELP ("trace") "\n\ | |
15998 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15999 | set_cmd_completer (c, location_completer); | |
16000 | ||
16001 | add_com_alias ("tp", "trace", class_alias, 0); | |
16002 | add_com_alias ("tr", "trace", class_alias, 1); | |
16003 | add_com_alias ("tra", "trace", class_alias, 1); | |
16004 | add_com_alias ("trac", "trace", class_alias, 1); | |
16005 | ||
7a697b8d | 16006 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 16007 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
16008 | \n" |
16009 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
16010 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16011 | set_cmd_completer (c, location_completer); | |
16012 | ||
0fb4aa4b | 16013 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 16014 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
16015 | \n\ |
16016 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
16017 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
16018 | or -m MARKER_ID.\n\n\ | |
16019 | If a marker id is specified, probe the marker with that name. With\n\ | |
16020 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
16021 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
16022 | This collects arbitrary user data passed in the probe point call to the\n\ | |
16023 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
16024 | by printing the $_sdata variable like any other convenience variable.\n\ | |
16025 | \n\ | |
16026 | CONDITION is a boolean expression.\n\ | |
629500fa | 16027 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
16028 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
16029 | conditions are different.\n\ | |
0fb4aa4b PA |
16030 | \n\ |
16031 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
16032 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16033 | set_cmd_completer (c, location_completer); | |
16034 | ||
11db9430 | 16035 | add_info ("tracepoints", info_tracepoints_command, _("\ |
e5a67952 | 16036 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
16037 | Convenience variable \"$tpnum\" contains the number of the\n\ |
16038 | last tracepoint set.")); | |
16039 | ||
16040 | add_info_alias ("tp", "tracepoints", 1); | |
16041 | ||
16042 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
16043 | Delete specified tracepoints.\n\ | |
16044 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16045 | No argument means delete all tracepoints."), | |
16046 | &deletelist); | |
7e20dfcd | 16047 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
16048 | |
16049 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
16050 | Disable specified tracepoints.\n\ | |
16051 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16052 | No argument means disable all tracepoints."), | |
16053 | &disablelist); | |
16054 | deprecate_cmd (c, "disable"); | |
16055 | ||
16056 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
16057 | Enable specified tracepoints.\n\ | |
16058 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16059 | No argument means enable all tracepoints."), | |
16060 | &enablelist); | |
16061 | deprecate_cmd (c, "enable"); | |
16062 | ||
16063 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
16064 | Set the passcount for a tracepoint.\n\ | |
16065 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
16066 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
16067 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
16068 | ||
6149aea9 PA |
16069 | add_prefix_cmd ("save", class_breakpoint, save_command, |
16070 | _("Save breakpoint definitions as a script."), | |
16071 | &save_cmdlist, "save ", | |
16072 | 0/*allow-unknown*/, &cmdlist); | |
16073 | ||
16074 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
16075 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 16076 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
16077 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
16078 | session to restore them."), | |
16079 | &save_cmdlist); | |
16080 | set_cmd_completer (c, filename_completer); | |
16081 | ||
16082 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 16083 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
16084 | Use the 'source' command in another debug session to restore them."), |
16085 | &save_cmdlist); | |
1042e4c0 SS |
16086 | set_cmd_completer (c, filename_completer); |
16087 | ||
6149aea9 PA |
16088 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
16089 | deprecate_cmd (c, "save tracepoints"); | |
16090 | ||
1bedd215 | 16091 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16092 | Breakpoint specific settings\n\ |
16093 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16094 | pending breakpoint behavior"), |
fa8d40ab JJ |
16095 | &breakpoint_set_cmdlist, "set breakpoint ", |
16096 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 16097 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16098 | Breakpoint specific settings\n\ |
16099 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16100 | pending breakpoint behavior"), |
fa8d40ab JJ |
16101 | &breakpoint_show_cmdlist, "show breakpoint ", |
16102 | 0/*allow-unknown*/, &showlist); | |
16103 | ||
7915a72c AC |
16104 | add_setshow_auto_boolean_cmd ("pending", no_class, |
16105 | &pending_break_support, _("\ | |
16106 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
16107 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
16108 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
16109 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
16110 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 16111 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 16112 | NULL, |
920d2a44 | 16113 | show_pending_break_support, |
6e1d7d6c AC |
16114 | &breakpoint_set_cmdlist, |
16115 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
16116 | |
16117 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
16118 | |
16119 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
16120 | &automatic_hardware_breakpoints, _("\ | |
16121 | Set automatic usage of hardware breakpoints."), _("\ | |
16122 | Show automatic usage of hardware breakpoints."), _("\ | |
16123 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
16124 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
16125 | a warning will be emitted for such breakpoints."), | |
16126 | NULL, | |
16127 | show_automatic_hardware_breakpoints, | |
16128 | &breakpoint_set_cmdlist, | |
16129 | &breakpoint_show_cmdlist); | |
74960c60 | 16130 | |
a25a5a45 PA |
16131 | add_setshow_boolean_cmd ("always-inserted", class_support, |
16132 | &always_inserted_mode, _("\ | |
74960c60 VP |
16133 | Set mode for inserting breakpoints."), _("\ |
16134 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
16135 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
16136 | they're created, kept inserted even when execution stops, and removed\n\ | |
16137 | only when the user deletes them. When this mode is off (the default),\n\ | |
16138 | breakpoints are inserted only when execution continues, and removed\n\ | |
16139 | when execution stops."), | |
72d0e2c5 YQ |
16140 | NULL, |
16141 | &show_always_inserted_mode, | |
16142 | &breakpoint_set_cmdlist, | |
16143 | &breakpoint_show_cmdlist); | |
f1310107 | 16144 | |
b775012e LM |
16145 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
16146 | condition_evaluation_enums, | |
16147 | &condition_evaluation_mode_1, _("\ | |
16148 | Set mode of breakpoint condition evaluation."), _("\ | |
16149 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 16150 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
16151 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
16152 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
16153 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
16154 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
16155 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
16156 | be set to \"gdb\""), | |
16157 | &set_condition_evaluation_mode, | |
16158 | &show_condition_evaluation_mode, | |
16159 | &breakpoint_set_cmdlist, | |
16160 | &breakpoint_show_cmdlist); | |
16161 | ||
f1310107 TJB |
16162 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
16163 | Set a breakpoint for an address range.\n\ | |
16164 | break-range START-LOCATION, END-LOCATION\n\ | |
16165 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
16166 | LINENUM, for that line in the current file,\n\ | |
16167 | FILE:LINENUM, for that line in that file,\n\ | |
16168 | +OFFSET, for that number of lines after the current line\n\ | |
16169 | or the start of the range\n\ | |
16170 | FUNCTION, for the first line in that function,\n\ | |
16171 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16172 | *ADDRESS, for the instruction at that address.\n\ | |
16173 | \n\ | |
16174 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16175 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16176 | range (including START-LOCATION and END-LOCATION).")); | |
16177 | ||
e7e0cddf | 16178 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 16179 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 16180 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
16181 | location may be a linespec, explicit, or address location.\n" |
16182 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
16183 | set_cmd_completer (c, location_completer); |
16184 | ||
16185 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16186 | dprintf_style_enums, &dprintf_style, _("\ | |
16187 | Set the style of usage for dynamic printf."), _("\ | |
16188 | Show the style of usage for dynamic printf."), _("\ | |
16189 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16190 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16191 | console, as with the \"printf\" command.\n\ | |
16192 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16193 | program; by default printf(), but you can choose a different function or\n\ | |
16194 | output stream by setting dprintf-function and dprintf-channel."), | |
16195 | update_dprintf_commands, NULL, | |
16196 | &setlist, &showlist); | |
16197 | ||
16198 | dprintf_function = xstrdup ("printf"); | |
16199 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16200 | &dprintf_function, _("\ | |
16201 | Set the function to use for dynamic printf"), _("\ | |
16202 | Show the function to use for dynamic printf"), NULL, | |
16203 | update_dprintf_commands, NULL, | |
16204 | &setlist, &showlist); | |
16205 | ||
16206 | dprintf_channel = xstrdup (""); | |
16207 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16208 | &dprintf_channel, _("\ | |
16209 | Set the channel to use for dynamic printf"), _("\ | |
16210 | Show the channel to use for dynamic printf"), NULL, | |
16211 | update_dprintf_commands, NULL, | |
16212 | &setlist, &showlist); | |
16213 | ||
d3ce09f5 SS |
16214 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
16215 | &disconnected_dprintf, _("\ | |
16216 | Set whether dprintf continues after GDB disconnects."), _("\ | |
16217 | Show whether dprintf continues after GDB disconnects."), _("\ | |
16218 | Use this to let dprintf commands continue to hit and produce output\n\ | |
16219 | even if GDB disconnects or detaches from the target."), | |
16220 | NULL, | |
16221 | NULL, | |
16222 | &setlist, &showlist); | |
16223 | ||
16224 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
16225 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
16226 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
16227 | ||
765dc015 | 16228 | automatic_hardware_breakpoints = 1; |
f3b1572e PA |
16229 | |
16230 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
49fa26b0 | 16231 | observer_attach_thread_exit (remove_threaded_breakpoints); |
c906108c | 16232 | } |